resistance curve of the Suzuki sensor. An often neglected but important area when tuning an engine is the ignition system. So if 50F = 283 Kelvin and 80F= 299 Kelvin then Megasquirt would want to inject 283/299 or about 6 1/2% less gas at the warmer temps. If the ignition switch was to go bad and be stuck 'on', I should be seeing a solid 10°. Dwell is how long the Megasquirt charges the ignition coils between sparks. 2 in the process, but it wouldn't properly install. Calibrating it to the stock toyota sensors may be a chore though, I've never used anything but GM sensors and those are pretty much plug n' play. Megasquirt EX, Installation Instructions document revision 1. This value is a static value that the MegaSquirt will use to command ignition timing. (The actual maximum current may depend on the. These have an input resistance of ~1k and should work OK with the Megasquirt outputs. Toyota multiplex = off 2. Hi everybody, I'm new to the site and to electronics, but I'm trying very hard to learn. Does anybody already know if the stock Gen 2 ignitor is smart or dumb, meaning. about 'Ignition coil theory and Ford TFI module questions', on Tue, 11 Nov 2003: So does 'arithmetic' - the arithmetic mean is 77. April 29th, 2012, 08:12 PM I got the Thunderbird fired up with MegaSquirt and it starts and runs decently well until around 3,500-4,000rpm then it starts breaking up. As with the original MegaSquirt EFI system the MegaSquirt 2 is an open project allowing anyone to customize the hardware and code to meet different needs. 00mm Stem Diameter - 5. You could definitely find gains in driveability/economy with practice and patience. I have bought an 1998 Audi A8 engine and a 2001 Passat 012 transmission plus the wiring harness and ECU to put in my 1988 Fiero T Top car. These have an input resistance of ~1k and should work OK with the Megasquirt outputs. I've seen 3-4. Finally, the average dwell is set at 3ms, a typical value for 2nd gen coils. If you want to crank the dwell up higher, open the MS case while its sitting at an idle for a while, and put your finger over the VB unit. My goal is to be able to send a PIP signal to control an EDIS system, like this I don't have to mess with dwell, etc. com 3-14-2008 I recently finished reading through all 16 pages of horror of My Old Rocs megasquirt install thread and I AINT SCARED! just as the title says, I want. 57 mainboard; • with or without MS3X and running MS3 firmware 1. Or, its the water in the E-85. Working with a simulator on the bench speeds development. 1 Microcontroller. 4 (Includes also the version equipped with wasted-spark ignition) General Megasquirt EX is a programmable engine control system, based on Megasquirt v2. 1,5 ms has worked for us. Does anyone know for sure? A guy my brother works with at Holden said they won't work in waste spark mode but I've found info on. Megasquirt ECU: Initial Setup So once you’ve either assembled or received your ECU, you’ll need to load firmware and a base map onto it if it hasn’t already been done. 2: Megasquirt System Hardware 2. Dwell is timer controlled, and is predictive to yield specified dwell over rpm range. )MegaSquirt was designed by Bruce Bowling and Al Grippo in 2001. E28 Megasquirt FAQ By Bradley Denton Revised 01/06/10 Since there is a lot of interest in Megasquirt as well as a lot of people on this board either using MS or planning to, I felt that I would try to help add to the knowledge base. The MS3X/V3. 75 volts Dwell = 27. - Lower dwell timings allow for higher peak rpm possible (if you want to go crazy) and higher off time reduces cooling required leading to higher life assuming the same cooling conditions - Smart and not stupidly "smart" like some LS2 and other coils which in an over dwell or overheat condition will fire by themselves at the wrong time. The dwell for a 1964 327 Chevy engine is shown below: Dwell is normally given in distributor degrees. I went thru all the settings by hand on the basic page and also even set the car to distributor vs coil on plug and was able to see a 0 on my timing light but nothing more. You can try values below 2. · I have a little dunbuggie/gokart with a twin· 840 cc engine on it. 1974 Ford F-250, Turbocharged and Intercooled 300, Megasquirt Fuel Injection and Ignition control, EDIS, 7. Thanks Scott. Megasquirt Help Please - again Sign in to follow this. see the MegaManual dwell calculator and use 8. 5 air/fuel ratio. They are used on late m. Injectors require a certain minimum pulse time to begin to open, and to obtain minimum fuel flow. If you need Megasquirt data for the ID725, please email us at [email protected] Turbo, supercharged, or NA the MegaSquirt can handle your fueling needs. This adds a time delay hit to the overall timing of the spark on an ECCS or similar total engine management system. *Limit maximum injector duty cycle to less than 90% for safe operation. The formula for the time it takes for an inductor to. MegaSquirt Sucks. (Now Turbo!) I have built a system that is very nearly “plug n play. Megasquirt ECU Part 1: Setup and Calibrations This set of guides will help your tune your MX-5 on a Megasquirt ECU, but the focus will be on using a MS2/Extra firmware based ECU. Megasquirt 2 Official guide for FS-DE engine Before going into detail about MS2 engine management system, I would like to introduce myself a little bit, I'm student and I've been graduated from college in electronic engineering recently, I will continue my studies in university, but this time I will be in mecanical engineering. Eg: assuming your dwell time value of 0. pdf), Text File (. 9 Dodge Van: EFI Tuning Questions and Engine Management: Tuesday at 4:47 PM: Megasquirt low vacuum idle tuning: EFI Tuning Questions and Engine. Some dwell and other settings by request Dwell battery voltage adjustment 6V. This version of the documentation applies to the Megasquirt-3 range of products which includes: • MS3 on V3. Target Crank HP # of Injectors. There is now a complete standalone, diy efi/ignition controller. Channels enabled: Engine RPM (RPM) Throttle Position (TPS) Coolant Temperature (Coolant) Manifold Absolute Pressure (MAP) Air/Fuel Ratio (AFR) And more; Megasquirt Wiring RaceCapture/Apex. beware that the factory coil seems to need rather low dwell (not surprising from a 6cyl distributer setup), rather 2-ish (than 3-ish) msec. This module was used to control the dwell time of the ignition coil, and provide a "limp home" mode, at base timing, in Which uses it to calculate RPM, and as a camshaft position indicator to calculate timed spark. )MegaSquirt was designed by Bruce Bowling and Al Grippo in 2001. The Turbo Forums - The discussion board for both hard core and beginner turbocharged vehicle enthusiasts. 07-24-19 12:49 AM by scotty305. You provide grounds and +12vdc to the coils themselves, and then use the EFI to trigger a +5vdc low current signal to charge the coil to maximum dwell. the valves: Head Diameter - 35. Max spark duration is fine at 1 All of the rest of the MS settings will be up to you. This engine management system allows for tremendous flexibility and can handle any custom engine set up from NA to turbo / supercharged combinations this plug in unit is up to the task. Most seem to fall in the $1200-1500 range, which is a lot money and in most cases. MegaSquirt Sucks. The engine will be mounted Longitudinal not transverse i will not stretch the car or cut the fire wall I should be able to keep the CV joint angle at about 10 degrees since the engine is so short. it varies depending on RPM. This firmware's featureset has grown hugely and continues to be refined. com FREE DELIVERY possible on eligible purchases. The time required for the injectors to begin to open is referred to as 'Injector Dead Time. Very nice! For what it's worth, these are my verified (with timing light) Megasquirt trigger and dwell settings for my M42 with COP conversion. During this time, the coil can be considered to be "charging up" so to speak, as the inductance of the primary winding is overcome and a strong EM field is. info ? RE: EFI algorithms EfiOz (Automotive) 25 Sep 07 18:29. Some tuners say that LS motors run the best at 13. Колата е Тойота Селика 1. beware that the factory coil seems to need rather low dwell (not surprising from a 6cyl distributer setup), rather 2-ish (than 3-ish) msec. Megasquirt works out at hundreds of pounds, an arduino basic I can build for just £7! also I think the arduino can be built to be much more compact than a megasquirt system. MegaSquirt-II has a 'base dwell' (aka. Megasquirt will need to have the firmware modified to suit the voltage vs. THE CHECK FOR RETAINER-TO-GUIDE INTERFERENCE. 2 Current Products. Here's a link to a detailed run down of each and, as always, there's a wonderful adapter plate available at 02again. Def buy the diyautotune megasquirt coils if you are between the two! The mercury marine of the same shell would absolutely not work though, despite being based on it. I have bought an 1998 Audi A8 engine and a 2001 Passat 012 transmission plus the wiring harness and ECU to put in my 1988 Fiero T Top car. Zero delay if rpm is high enough and max. If tuning on a Dynojet, try for 12. MS2 Extra MegaSquirt 2 EMS stand alone engine management system assembled with the latest surface mount PCB3. What is the dwell setting for the 8247 coil? If this is your first visit, be sure to check out the FAQ by clicking the link above. With eight cylinders, there are 360 distributor degrees. Megasquirt-3 Setting up MS3 1. 5 (mV) the user could adjust dwell in MegaTune until the displayed optimal mV measurement is close to the DVM DC (mean-voltage) mV measurement. Ignition is the point at which a high-voltage, low. 3 to Megasquirt Parts Required. I've seen 3-4. Using the Chevy Vortec ignition module. MegaShift™ ADC Calculations. The ID850, ID1000, ID1300, ID1700 and ID2000 are currently available. Spark occurs at point opening, with each spark point 45-degrees apart. If tuning on a Mustang dyno or on the street try for 12. Any strange behaviour, crashing issues etc, post them here! Problems compiling the firmware should go in the General support section rather than here. 88 is more than the harmonic (3 syllables!) mean, 70. Typically CAN1 is used, so you would use CAN 1 High' and CAN 1 Low. 17 (mS) To do this more accurately the exact battery voltage will need to be known, the voltage drop across the ignition module will need to be known, plus any additional voltage drops in the wiring. maximum dwell duration) and a voltage correction table (the time to charge depends on the applied voltage, and this table lets you correct for that). Max Duty Cycle %* Required Fuel Injector Static Flow Rate @43. 0ms Set the Spark Output to Going High Build circuit in 5. The formula for the time it takes for an inductor to charge up to a certain current (assume t. This will tell the MegaSquirt to ignore our Ignition Table and hold a fixed advance. And then your unit is ready to be trashed. Megasquirt (MS) is what is known as a engine control unit (ECU) it is often referred to as a standalone engine management (SEM) system. com 3-14-2008 I recently finished reading through all 16 pages of horror of My Old Rocs megasquirt install thread and I AINT SCARED! just as the title says, I want. The megasquirt processor is faster than any 80's era ecu and far easier to tune. Re: School me, Crank trigger angles, tooth offsets, home signals. 7ms timer until the end of the dwell period. 57 is an ECU based on Megasquirt-3 technology, consisting internally of an MS3 card and an MS3X expansion card installed on a surface mount V3. 9 Dodge Van: EFI Tuning Questions and Engine Management: Tuesday at 4:47 PM: Megasquirt low vacuum idle tuning: EFI Tuning Questions and Engine. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. There are four ways to set the dwell: Calculate it: If you know the DC resistance and inductance of the coil's primary circuit (either from a spec sheet or from measuring these with an LCR meter), you can use the following formula for an idea inductor to calculate what the dwell should be. from what i read, i think the trigger return values are used to calculate the dwell (when engine running) so not sure what would happen if. I've spent a lot of time learning, tuning and tweaking the setup and tune. When describing ignition timing, many racers use phrases like "I put 30 degrees of lead in it" without understanding what this represents. com Forum > Discussion Boards > Charger Discussion (Moderators: Chryco Psycho, hemigeno, firefighter3931, Charger-Bodie) > Who wants to Megasquirt, full sequential fuel/ spark a 68 charger! This Guy!!. Im just wondering how i upgrade these on my megasquirt MS2. The Megasquirt injector characterization is done a little differently than some other systems. I have a classic Alfa Romeo and I'd like to remove the distributor points and replace them with a solid state solution. It is important to do stall detection, with ignition and fuel timeout. Because of this the fuel is always ignited before the piston reaches the top so that maxumum presure can be made in the cylinder before the piston is on it's way down. Nov 3, 2011 #1. Def buy the diyautotune megasquirt coils if you are between the two! The mercury marine of the same shell would absolutely not work though, despite being based on it. I checked Megasquirt's site. There are four ways to set the dwell: Calculate it: If you know the DC resistance and inductance of the coil's primary circuit (either from a spec sheet or from measuring these with an LCR meter), you can use the following formula for an idea inductor to calculate what the dwell should be. The dwell time limit on the LS1 igniter is simply a safety limit so the driver doesn't melt down. Your Megasquirt uses the ambient air temperature in order to calculate the best fuel mixture for your engine. It is based on the 'rules of thumb' presented here: Making a Spark Advance Table. This model assumes 100% energy transfer from primary circuit to. 45mm Length - 99. Single coil dwell settings on MegaSquirt 2 extra. No I don't mean harder plugs, competition coils, lumenition etc. Available Source code means Endless Development. x Not covered: • MegaSquirt-1. Calculate it: If you know the DC resistance and inductance of the coil's primary circuit (either from a spec sheet or from measuring these with an LCR meter), you can use the following formula for an idea inductor to calculate what the dwell should be. Well it is as easy as first getting your trigger wheel installed, getting a VR/Hall sensor pointed at it, finding a coil pack that you know the dwell and resistance times on, modifying your MSII main board, set your sensor pots, make sure all the ignition setting in MSnS are correct, don't overhead your drivers, track down all the noise in the. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Here's a link to a detailed run down of each and, as always, there's a wonderful adapter plate available at 02again. Колата е Тойота Селика 1. The dwell time limit on the LS1 igniter is simply a safety limit so the driver doesn't melt down. Connecting the various temperature sensors up isn't technically necessary, but you might like to so that you can have an accurate temperature gauge. Oh, and using the MS Dwell calculator, a blaster 2/3 coil has an optimal dwell time of 2. int dwell = 250; // dwell time in uS I hear the MegaSquirt project releases their schematics as open-source, so I might try to find their PSU and see what they came up with. I've spent a lot of time learning, tuning and tweaking the setup and tune. 57 mainboard. All "standard" Megasquirt are using DB-style connectors, lots of them with VR sensors. I will use my MegaSquirt laptop RPM reading to calibrate the tach. Megasquirt Integration. maximum dwell duration) and a voltage correction table (the time to charge depends on the applied voltage, and this table lets you correct for that). 2 Printed Circuit Board. I started it initially with just fuel and a distributor but switched to LS D585 coils running in wasted spark. you may have meant msefi. · First off I would like to thank everyone who posts to the forums here,· huge amount of info is here and it has helped me out so much doing my little project. Injectors require a certain minimum pulse time to begin to open, and to obtain minimum fuel flow. then calculate approx what air quantity the engine is likely to inhale per minute, thus being able to work out how much fuel in theory you need to mix with that for it. I am fitting an eight plug head to a four cylinder engine. If there's one thing you don't want to fail, it's the ECU. Why should I get a MegaSquirt over eManage, or a 2nd hand FM LINK, or Adaptronic etc. Figure Figure5 5 depicts the box-and-whisker plot of dwell times per dwell position in the actual clinical treatment plans as described in Table Table1. I will use my MegaSquirt laptop RPM reading to calibrate the tach. Calibrating it to the stock toyota sensors may be a chore though, I've never used anything but GM sensors and those are pretty much plug n' play. All "standard" Megasquirt are using DB-style connectors, lots of them with VR sensors. If any sensor is off it will affect the timing advance calculation. I had a chat with Ray about this this morning about how Megasquirt deals with coil dwell times of 3. Max spark duration is fine at 1 All of the rest of the MS settings will be up to you. Nykyään ohjainyksikköjä on tarjolla Megasquirt-I v. Naturally Aspirated. Since you are removing your AFM anyway, you should tap this into the new tubing you are going to have to create to replace the stock rubber hose. Well this time around we reached out to the company in an effort. Hear is the test data from my detailed LS1 coil measurements using Megasquirt (MS) to trigger the coils. 7:1) air to fuel ratio, and the engine actually pulled in a volume of air equal to its own displacement every engine cycle at the temperature and pressure that MegaSquirt measures. Only the 94-95 DOHC have a removable chip and some support, albeit not much. I've seen 3-4. Megasquirt-3 Setting up MS3 1. April 29th, 2012, 08:12 PM I got the Thunderbird fired up with MegaSquirt and it starts and runs decently well until around 3,500-4,000rpm then it starts breaking up. Re: 20v Megasquirt Thread Post by Eightysixer23 » Sat Jun 01, 2013 6:35 am I checked for 12v on Borge the module and igniter and 12v exist in both and in the correct pin. 07-24-19 12:49 AM by scotty305. Because of this the fuel is always ignited before the piston reaches the top so that maxumum presure can be made in the cylinder before the piston is on it's way down. Cranking dwell could probably be lower. Injector Flow CC/min Flow LB/Hr Ohm 10v 11v 12v 13v 14v 15v Accel 578 55 3 1 24 1 03 0 87 0 73 0 63 0 53 Accel 872 83 3 1 46 1 20 1 00 0 85 0 73 0 62 Acura NSX 240 23 2 0 71 0 56 0 45 0 36 0 27 0 21 Acura RSX 290 28 12 1 28 1 07 0 86 0 70 0 57 0 46 Acura RSX Type-S 330 31 12 1 37 1 14 0 95 0 81 0 67 0 55 Audi S4/TT 340 32 14 1 12 0 91 0 75 0 62 0 52 0 42 Blitz. 2 can do! On the megasquirt forum, Dwell time limitiation at higher RPMs. Flowing in excess of 2000cc/min at 3 bar, the ID2000 will also provide a smooth stoichiometric idle on E85, and it will do all this while maintaining strict linearity up to 95% duty cycle at 9000rpm. i'll run the numbers in the next post. Only the 94-95 DOHC have a removable chip and some support, albeit not much. These are the coils that Ron Tyler has used on L6s with a Wolf ECU as the trigger source. A MegaSquirt ECU can give you Mappable Ignition using: A distributor setup with a simple hall sensor/points in the distributor or a cam/crank signal. I have a 98 ACR with a 2. Dwell has no effect on the duration of the spark event. MegaSquirt is a general-purpose aftermarket electronic fuel injection (EFI) controller designed to be used with a wide range of spark-ignition internal combustion engines (i. MegaSquirt is an affordable, standalone, Mappable Engine Management System that can control the Fuel and Ignition on virtually any liquid fueled spark-ignition engine, naturally aspirated or boosted. An engineer can come out to you and 'map' your vehicle on site and on the road (or track if not road legal). I would imagine they engineered their PSU accordingly. You will need to acquire connectors for wiring the MegaSquirt ® to your injectors, etc. The SPOUT signal, (timed spark out), is an output at system voltage "Megasquirt", in particular. 5ms whilst cranking and 3. actual_dwell=2. 074kHz Select the maximum gain of 2. Hear is the test data from my detailed LS1 coil measurements using Megasquirt (MS) to trigger the coils. For what it's worth the exact coils I am running are the NGK U5015 (the black top ones used on the Lamborghini Gallardo rather than the "bling" red tops used on the Audi R8), and NGK e-mailed me that the correct dwell for those was 1. Toyota multiplex = off 2. Hi everybody, I'm new to the site and to electronics, but I'm trying very hard to learn. This firmware's featureset has grown hugely and continues to be refined. All "standard" Megasquirt are using DB-style connectors, lots of them with VR sensors. This value is a static value that the MegaSquirt will use to command ignition timing. This engine management system allows for tremendous flexibility and can handle any custom engine set up from NA to turbo / supercharged combinations this plug in unit is up to the task. pdf), Text File (. - публикувано в Силов / Performance тунинг: Здравейте колеги, имам нужда от малко помощ за настройките на мегата. Nissan 360. ~5ms I'd say. 5mS in engines doing 10. To control your coil for maximum performance and reliability, you must set the maximum dwell parameter for your MicroSquirt® controller. I need to add another coil. It's been a good source of ideas for all sorts of things not even related to it in ways. MegaSquirt Fuel Equation-- Ignition Input Batch, Bank, Sequential Injection and MegaSquirt. 75 volts Dwell = 27. Megasquirt works out at hundreds of pounds, an arduino basic I can build for just £7! also I think the arduino can be built to be much more compact than a megasquirt system. All of the ground pins 1,2,7,8,9,10,11,12,13,14,15,16,17,18,19 are connected together within the Megasquirt. , non- diesel engines. The dwell time limit on the LS1 igniter is simply a safety limit so the driver doesn't melt down. Fuel calculator gave me Forum: aftermarket engine management 08-15 mine is 3. I thought I saw somewhere on the site that the factory ECU has something around 5 k - 5. (The actual maximum current may depend on the brand of module, but this is typically a safe number. Subaru 6/7. Because of this the fuel is always ignited before the piston reaches the top so that maxumum presure can be made in the cylinder before the piston is on it's way down. I have a very solid VE table and the car runs and starts very well but Several things have been a pesky problem from the start. Calculate it: If you know the DC resistance and inductance of the coil's primary circuit (either from a spec sheet or from measuring these with an LCR meter), you can use the following formula for an idea inductor to calculate what the dwell should be. 0 ms Dwell type: standard dwell. According to the HybridZ site and using the formula on AEMFOrums for calculating Dwell time (or just looking at the Dwell Time parameter in AEM), I should be safe to use a 3ms dwell time range. The inputs are beginning and ending RPM, RPM step, dwell angle in crankshaft degrees, resistance of primary ignition coil circuit in ohms, inductance of ignition coil primary in milliHenries (mH), battery voltage, and capacitance of ignition coil secondary in picoFarads (pF). What is megasquirt you might ask, well, very simply put its a do it yourself EFI project encompassing many different fuel injection computers. This firmware's featureset has grown hugely and continues to be refined. Target Crank HP # of Injectors. And then your unit is ready to be trashed. Check the laws that apply in your locality to determine if using a MegaSquirt ® or MicroSquirt ® controller is legal for your application. If you need something and you can't locate it, feel free to contact me using the button in the support section above. com or megasquirt. To control your coil for maximum performance and reliability, you must set the maximum dwell parameter for your MicroSquirt® controller. Problem is, What seems great in theory isn't exactly what's happening in the engine and Megasquirt seems to over correct and run too lean at warmer temps. This value is a static value that the MegaSquirt will use to command ignition timing. 6ms with the 700cc's. The Turbo Forums - The discussion board for both hard core and beginner turbocharged vehicle enthusiasts. Re: Megasquirt FAQ, writeup (Updated 30/10/09) Wed Feb 24, 2010 4:50 am Alright, I finally finished the VR sensor, plugged everything in, flashed the new firmware sucessfully and now I am starting to go through all the settings to get the car to run. · the carb on it was really really bad,· so i had the bright idea, "why dont i put fuel injection on it",· so after about 2 weeks of work. Help needed: Megasquirt on a Yamaha R6 Turbo Mini Forums Welcome to Current dwell is 5. Fuel Injector Calculator. As a next step I actually want to tie the END of the Dwell, the actual ignition, to the hall impulse. Ignition Coil Circuit Simulation By Bowling & Grippo This program simulates a conventional automotive ignition circuit, and shows you primary coil current, secondary voltage, and energy. 00mm Stem Diameter - 5. Matt said this was a little low and i could try to crank it up, but with the dwell set at 2 i had no issues. x Not covered: • MegaSquirt-1. English is my 3rd language and I still gotta alot to learn, so its. And then your unit is ready to be trashed. These have an input resistance of ~1k and should work OK with the Megasquirt outputs. 5) 900 / 127. Microtech EFI; LT-9c. Def buy the diyautotune megasquirt coils if you are between the two! The mercury marine of the same shell would absolutely not work though, despite being based on it. from what i read, i think the trigger return values are used to calculate the dwell (when engine running) so not sure what would happen if. Niehoff has individual injector connectors under part number 28419 (connector) and 28418 (sealing boot). 0ms pulse to control the dwell. Megasquirt Help Please - again Cranking Dwell been played with (about 6 gives a good spark) 4) Time Based, helps, but no go still. The 83 280zx turbo ecu had a 3mhz proccessor (yes-"3", modern desktops run at over 2ghz) running off of a small fuel and ignition map stored on three. If you need Megasquirt data for the ID725, please email us at [email protected] 7 (mH) divided by 8. Megasquirt Standalone Workgroup I know it's not an SRT4 but maybe someone can help. 6ms with the 700cc's. Because there is such a difference between the setup of the various MegaSquirt versions, each ECU has it's own configuration page. Enter a value in Timing for Fixed Advance (degrees). Re: PropPower - Crank Angle Based Event Scheduling Etc I'm not sure if the certification testing was done with the chips loaded, but I know their in-house testing was done with all outputs switching at 160 MHz (the internal timers can run faster than the main clock). 5) = 900/127. What is megasquirt you might ask, well, very simply put its a do it yourself EFI project encompassing many different fuel injection computers. 17 (mS) To do this more accurately the exact battery voltage will need to be known, the voltage drop across the ignition module will need to be known, plus any additional voltage drops in the wiring. You may have to register before you can post: click the register link above to proceed. I'm trying to run stock Gen 3 ignition with a megasquirt MS3X ECU. Induction Type. If any sensor is off it will affect the timing advance calculation. I have a 36-1 on my turbo probe, but it's managed by a megasquirt. from what i read, i think the trigger return values are used to calculate the dwell (when engine running) so not sure what would happen if. We capture the ignition signal on the first (rising) edge of the wheel. This adds a time delay hit to the overall timing of the spark on an ECCS or similar total engine management system. stefanst wrote:My first suspicion would be the short dwell time. Connecting the various temperature sensors up isn't technically necessary, but you might like to so that you can have an accurate temperature gauge. ) Likewise the power grounds - these are shown at the right of the connector because this makes them electrically closer to the high power components within the. 7 Ignition coils dwell Dwell time table (16x1), dwell correction table in function of RPM (16x1) 8 Ignition advance corrections Correction in function of CLT and IAT (16x1), per cylinder correction 9 IAT, CLT sensors Calibration table (20x1), sensors wizard 10 Cranking fuel table Table 16x1 11 Enrichments ASE, Warmup, Acceleration, Deceleration. Zero delay if rpm is high enough and max. Target Crank HP # of Injectors. Max Duty Cycle %* Required Fuel Injector Static Flow Rate @43. Available Source code means Endless Development. Working with a simulator on the bench speeds development. 6ms with the 700cc's. Engine Management Forum - Use this area for discussing Haltech, Wolf 3D, Power FC, AEM and any other aftermarket ECU upgrades. 57 in an anodized black case - Assembled Unit Part # MS2357-C. Cranking dwell could probably be lower. The formula for the time it takes for an inductor to charge up to a certain current (assume t. This value is a static value that the MegaSquirt will use to command ignition timing. Megasquirt (MS) is what is known as a engine control unit (ECU) it is often referred to as a standalone engine management (SEM) system. 1974 Ford F-250, Turbocharged and Intercooled 300, Megasquirt Fuel Injection and Ignition control, EDIS, 7. Injector "lag" time is the time it takes for an injector to open (OT) form the time it has been energized until it is fully open. It'll be easier for an home-made implementation. I have a classic Alfa Romeo and I'd like to remove the distributor points and replace them with a solid state solution. Theres 2 ways you can measure engine parameters so the ECU can calculate engine load either via (MAP sensor + Throttle position sensor) or (MAF sensor- air flow). According to the HybridZ site and using the formula on AEMFOrums for calculating Dwell time (or just looking at the Dwell Time parameter in AEM), I should be safe to use a 3ms dwell time range. Re: Megasquirt FAQ, writeup (Updated 30/10/09) Wed Feb 24, 2010 4:50 am Alright, I finally finished the VR sensor, plugged everything in, flashed the new firmware sucessfully and now I am starting to go through all the settings to get the car to run. So if 50F = 283 Kelvin and 80F= 299 Kelvin then Megasquirt would want to inject 283/299 or about 6 1/2% less gas at the warmer temps. The primaries are earthed by two igbt's in the ignition box (dyna 2000). General logging through TunerStudio. The 94-95 A body 3100 also has some MEMCAL chip setups, and Tuner Cat is the only known definition for tuning it. Coil dwell table. Typically CAN1 is used, so you would use CAN 1 High' and CAN 1 Low. The dwell for a 1964 327 Chevy engine is shown below: Dwell is normally given in distributor degrees. The dwell time limit on the LS1 igniter is simply a safety limit so the driver doesn't melt down. MegaSquirt Sucks. Problem is, What seems great in theory isn't exactly what's happening in the engine and Megasquirt seems to over correct and run too lean at warmer temps. com ) for $59. Turbo, supercharged, or NA the MegaSquirt can handle your fueling. When the leading edge aligns with the trigger coil, the ignitor would need to calculate an appropriate spark delay based on rpm. ) If you are using a stock type coil and cannot find these specs, 2. If there's one thing you don't want to fail, it's the ECU. Naturally Aspirated. pdf), Text File (. 4)containing a spark plug fitting that allows the valve to be held up on its seat with shop air pressure, while you. Megasquirt allows you to set the dwell on a "smart" coil the difference is that SOME "smart" coils have a fault mode to prevent damage from over dwell. With this implementatin the start of the Dwell-Time is tied to the rising edge of the hall. Dwell is how long the Megasquirt charges the ignition coils between sparks. As it's a full ECU tuning will be in more depth as it's not just the WOT areas you need to tune. This engine management system allows for tremendous flexibility and can handle any custom engine set up from NA to turbo / supercharged combinations this plug in unit is up to the task. Nissan 360. THE CHECK FOR RETAINER-TO-GUIDE INTERFERENCE. 0 degrees is reasonable. 7:1) air to fuel ratio, and the engine actually pulled in a volume of air equal to its own displacement every engine cycle at the temperature and pressure that MegaSquirt measures. 0 software overhead is only 20uS). 0 sekä Megasquirt-III v. When setting up the MShift™/GPIO ADC channels for 'non-standard' usage, there are a number of considerations: If you are using the sensor as one leg of a voltage divider, then you need to consider what the resulting voltage signal is. 8 # (msec) read from realtime data optimal_mV_measurement: actual_dwell * fires_per_camrot / (120000 / RPM) * desired_peak /2 * meas_ohm * 1000 = 5. 5 (mV) the user could adjust dwell in MegaTune until the displayed optimal mV measurement is close to the DVM DC (mean-voltage) mV measurement. I've spent a lot of time learning, tuning and tweaking the setup and tune. 0, though it may work with other browsers. 7:1) air to fuel ratio, and the engine actually pulled in a volume of air equal to its own displacement every engine cycle at the temperature and pressure that MegaSquirt measures. Problem is, What seems great in theory isn't exactly what's happening in the engine and Megasquirt seems to over correct and run too lean at warmer temps. The curves provided in the base maps seem to be adequate however may need fine tuning to get perfect especially if you’re not using the stock injectors. 0 amps for the maximum current. 1,5 ms is quite safe value to use with KDFI. In comparison to the eManage a Megasquirt will give you total control over injectors and ignition coils so you're not limited to injector sizes. Fuel calculator gave me Forum: aftermarket engine management 08-15 mine is 3. ExtraEFI CD. 6 litre cars. Buy NEW IGNITION CONTROL MODULE FITS EUROPEAN MODEL 1988-89 YUGO 1-227-010-001 -004-100 -227-100-138 -227-100-139 1-227-010-001: Control Units - Amazon. pdf), Text File (. 2 Printed Circuit Board. Diyautotune would too with identical dwell changes to aem if you knew why you'd laugh, I was young back then, reckless, lol. The 94-95 A body 3100 also has some MEMCAL chip setups, and Tuner Cat is the only known definition for tuning it. MegaSquirt works on a number of levels to inject the correct amount of fuel into your engine. Megasquirt works fine running both cyls from the same fuel map but there are compromises in that at certain parts of the fuel map one cyl might run a difference of 2 or 2. Megasquirt Standalone Workgroup I know it's not an SRT4 but maybe someone can help. this is for the output side of megasquirt using 4g63 coils and ignitor, you dont have to use these, just use what ever is available to you at a good price, you will also have to use the correct dwell settings for the ignitor you use- the mistubishi one is in that link somewhere close. MegaSquirt is an affordable, standalone, Mappable Engine Management System that can control the Fuel and Ignition on virtually any liquid fueled spark-ignition engine, naturally aspirated or boosted. 5 AFR to the other cyl, mostly in cruise areas of the fuel map. Mobile and residential tuning service. April 29th, 2012, 08:12 PM I got the Thunderbird fired up with MegaSquirt and it starts and runs decently well until around 3,500-4,000rpm then it starts breaking up. Eg: assuming your dwell time value of 0. ( do not ground the sensors to the body or the battery or the engine. *Limit maximum injector duty cycle to less than 90% for safe operation. As a default, the Canems software shows the main dashboard, though this can also. Well this time around we reached out to the company in an effort. You could definitely find gains in driveability/economy with practice and patience. Megasquirt ECU: Initial Setup So once you’ve either assembled or received your ECU, you’ll need to load firmware and a base map onto it if it hasn’t already been done. Stand-alone ECU's have a lot to offer in the way of performance and flexibility, however they're generally very expensive, ranging anywhere from about $800 up to well over $3000 for a motorsports grade module. Megasquirt direct coil control - This is basically the same as the 123Tune setup, with the only differences being you will instead use your stock distributor (it's only purpose here is to direct the spark to the correct plug), and you will program the timing through Megasquirt, which will then directly control the firing of the ignition coil. Some engine managment systems require you to enter this time and refer to it as injector lag, latency, delay or other terms. The SX chip is amazing. Mon Feb 17, 2020 10:08 am. Dwell is how long the Megasquirt charges the ignition coils between sparks. 88 is more than the harmonic (3 syllables!) mean, 70. It is important to do stall detection, with ignition and fuel timeout. 7ms timer until the end of the dwell period. Buy NEW IGNITION CONTROL MODULE FITS EUROPEAN MODEL 1988-89 YUGO 1-227-010-001 -004-100 -227-100-138 -227-100-139 1-227-010-001: Control Units - Amazon. com ) for $59. The dwell for a 1964 327 Chevy engine is shown below: Dwell is normally given in distributor degrees. 14 Inputs, outputs and real-time data Under the 'View' menu, you will find an option to display 'Mapping Essentials' for the ECU. This will tell the MegaSquirt to ignore our Ignition Table and hold a fixed advance. The MS3X/V3. 11K RPM is not a problem. The AEM ign1 would work with proper dwell calibration. Cranking dwell could probably be lower. 5 dwell means ~ *2. 57 mainboard; • with or without MS3X and running MS3 firmware 1. E28 Megasquirt FAQ By Bradley Denton Revised 01/06/10 Since there is a lot of interest in Megasquirt as well as a lot of people on this board either using MS or planning to, I felt that I would try to help add to the knowledge base. It is unlikely you will need to adjust these settings unless you are using aftermarket ignition boxes. Spark occurs at point opening, with each spark point 45-degrees apart. The time required for the injectors to begin to open is referred to as 'Injector Dead Time. Your Megasquirt uses the ambient air temperature in order to calculate the best fuel mixture for your engine. Feature Requests. MS2 Extra MegaSquirt 2 processor-specific features: 24 MHz HCS12 processor; Fuel control to 1 µsec (100 times more resolution than MegaSquirt-I) Ignition control (full spark timing advance control, dwell control, etc) for one coil/distributor (7 pin HEI for example) and Ford's EDIS systems. MegaSquirt is an affordable, standalone, Mappable Engine Management System that can control the Fuel and Ignition on virtually any liquid fueled spark-ignition engine, naturally aspirated or boosted. (The actual maximum current may depend on the. Dwell, as used generally in an automotive context, describes the period of time during which current conducts through the primary winding of the ignition coil. Thanks for the support. *Limit maximum injector duty cycle to less than 90% for safe operation. The ECU will adjust the dwell based on engine speed and battery voltage. Hear is the test data from my detailed LS1 coil measurements using Megasquirt (MS) to trigger the coils. This firmware's featureset has grown hugely and continues to be refined. This is a tool for establishing a baseline spark advance table for your tuning efforts with MegaSquirt® or MicroSquirt® controllers. I adjusted the dwell of the coils to match a stock GM dwell table based off of pictures other people posted online they posted. We offer no-fuss plug and play kit to suit 180SX CA18DET, photos on the slideshow above are exactly what you will be getting and installation manual (including ignition dwell time adjustment) is available on the tab above at your disposal. All "standard" Megasquirt are using DB-style connectors, lots of them with VR sensors. If tuning on a Mustang dyno or on the street try for 12. Also, to test the board I first had to build a Stimulator which was also a kit. MegaSquirt Sucks. This is actually from the MegaSquirt manual and this is on determining your dwell time setting. Tue Feb 23, 2016 12:14 am: Display posts from previous:. *Limit maximum injector duty cycle to less than 90% for safe operation. What is the dwell setting for the 8247 coil? If this is your first visit, be sure to check out the FAQ by clicking the link above. I thought I would share my "cost effective" fully sequential fuel and spark EFI conversion with everyone. 2 can do! On the megasquirt forum, Dwell time limitiation at higher RPMs. ) Likewise the power grounds - these are shown at the right of the connector because this makes them electrically closer to the high power components within the. All of the ground pins 1,2,7,8,9,10,11,12,13,14,15,16,17,18,19 are connected together within the Megasquirt. MegaSquirt is a general-purpose aftermarket electronic fuel injection (EFI) controller designed to be used with a wide range of spark-ignition internal combustion engines (i. THE CHECK FOR RETAINER-TO-GUIDE INTERFERENCE. The circuit in 5. Thought I would need to reduced the req fuel by 30%. then calculate approx what air quantity the engine is likely to inhale per minute, thus being able to work out how much fuel in theory you need to mix with that for it. I am fitting an eight plug head to a four cylinder engine. 5 inch to muffler - dual 3 inch out the back. As with the original MegaSquirt EFI system the MegaSquirt 2 is an open project allowing anyone to customize the hardware and code to meet different needs. I started with the well known atmel 328p used in. It is important to do stall detection, with ignition and fuel timeout. the valves: Head Diameter - 35. Nov 3, 2011 #1. Re: School me, Crank trigger angles, tooth offsets, home signals. The formula for the time it takes for an inductor to charge up to a certain current (assume t. I thought I would share my "cost effective" fully sequential fuel and spark EFI conversion with everyone. com Forum > Discussion Boards > Charger Discussion (Moderators: Chryco Psycho, hemigeno, firefighter3931, Charger-Bodie) > Who wants to Megasquirt, full sequential fuel/ spark a 68 charger! This Guy!!. Well it is as easy as first getting your trigger wheel installed, getting a VR/Hall sensor pointed at it, finding a coil pack that you know the dwell and resistance times on, modifying your MSII main board, set your sensor pots, make sure all the ignition setting in MSnS are correct, don't overhead your drivers, track down all the noise in the. Other readers will always be interested in your opinion of the books you've read. 3 Later than 2001 coils, PN 06B 905 115 rev L and R have a low input resistance. And then your unit is ready to be trashed. - Lower dwell timings allow for higher peak rpm possible (if you want to go crazy) and higher off time reduces cooling required leading to higher life assuming the same cooling conditions - Smart and not stupidly "smart" like some LS2 and other coils which in an over dwell or overheat condition will fire by themselves at the wrong time. Megasquirt EX, Installation Instructions document revision 1. On the web, Waytek has lots of different connectors that you can use in building your MegaSquirt. 60 valves, EFI manifolds into turbo - 3. So if 50F = 283 Kelvin and 80F= 299 Kelvin then Megasquirt would want to inject 283/299 or about 6 1/2% less gas at the warmer temps. Cranking advance is fine at 3 though. With the Link BMW e36 OBDI M50/S50 plug in standalone engine management "chip tunes" are a thing of the past. Re: Strange issues with crank… by theonewithin. Characterization SummariesFord CalibrationsGM CalibrationsDodge CalibrationsMitsubishi CalibrationsSubaru CalibrationsHonda CalibrationsBRZ/FRS CalibrationsStand Alone CalibrationsFSAE Injector Calibrations. Over dwell and over duty protection. ) MegaSquirt was designed by Bruce Bowling and Al Grippo in 2001. 2 Printed Circuit Board. Injector Flow CC/min Flow LB/Hr Ohm 10v 11v 12v 13v 14v 15v Accel 578 55 3 1 24 1 03 0 87 0 73 0 63 0 53 Accel 872 83 3 1 46 1 20 1 00 0 85 0 73 0 62 Acura NSX 240 23 2 0 71 0 56 0 45 0 36 0 27 0 21 Acura RSX 290 28 12 1 28 1 07 0 86 0 70 0 57 0 46 Acura RSX Type-S 330 31 12 1 37 1 14 0 95 0 81 0 67 0 55 Audi S4/TT 340 32 14 1 12 0 91 0 75 0 62 0 52 0 42 Blitz. As a default, the Canems software shows the main dashboard, though this can also. Since you are removing your AFM anyway, you should tap this into the new tubing you are going to have to create to replace the stock rubber hose. AEM's 4 Channel Coil Driver is designed to drive two wire "dumb" coils in coil-on-plug applications. 1uF and 10uF cap for decoupling. 75 volts Dwell = 27. No I don't mean harder plugs, competition coils, lumenition etc. > I'm going to drain the tank and get some dry fuel. 1 Microcontroller. This is a tool for establishing a baseline spark advance table for your tuning efforts with MegaSquirt® or MicroSquirt® controllers. The OS knows the existing RPM, and can calculate how many timer ticks are required from the now time until it would be 10 degrees. Once they are open, they flow at a constant rate until closing. Def buy the diyautotune megasquirt coils if you are between the two! The mercury marine of the same shell would absolutely not work though, despite being based on it. 05-01-20 05:52 PM. April 29th, 2012, 08:12 PM I got the Thunderbird fired up with MegaSquirt and it starts and runs decently well until around 3,500-4,000rpm then it starts breaking up. LC-1 wideband (i would consider essential but a narrowband could be used, would need a external wideband for tuning). For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. An engineer can come out to you and 'map' your vehicle on site and on the road (or track if not road legal). 7 (mH) divided by 8. With this implementatin the start of the Dwell-Time is tied to the rising edge of the hall. 0 is the default, but anywhere between 10. This adds a time delay hit to the overall timing of the spark on an ECCS or similar total engine management system. This manual covers MS3X/V3. beware that the factory coil seems to need rather low dwell (not surprising from a 6cyl distributer setup), rather 2-ish (than 3-ish) msec. The time required for the injectors to begin to open is referred to as ‘Injector Dead Time. Nothing in the stock ecu will work for that. There are 3 tools to correct that: . Its no longer waste spark, its individual CNP GM LSx coils. Hi everybody, I'm new to the site and to electronics, but I'm trying very hard to learn. Megasquirt ECU Part 1: Setup and Calibrations This set of guides will help your tune your MX-5 on a Megasquirt ECU, but the focus will be on using a MS2/Extra firmware based ECU. I adjusted the dwell of the coils to match a stock GM dwell table based off of pictures other people posted online they posted. Similar Topics - megasquirt 42# injectors Forum Date; MegaSquirt wiring to the disturber: Newbie and Basic Turbo Tech Forum: Apr 5, 2013: Megasquirt and fuel tank vapors: Newbie and Basic Turbo Tech Forum: Sep 12, 2012: Megasquirt 2 C1500 Ignition help: Newbie and Basic Turbo Tech Forum: Feb 2, 2011. 0 milliseconds. Check the laws that apply in your locality to determine if using a MegaSquirt ® or MicroSquirt ® controller is legal for your application. by elturbonitroso. Dwell has no effect on the duration of the spark event. I got a smoother idle than the distributor but I know my distributor setup wasn't perfect. northernautoparts. MegaSquirt-II has a 'base dwell' (aka. 6 с 4AFE мотор и оригиналното. ECU Master EMU User Manual. Megasquirt-rakennusarjojen hinnat ovat 100-200 e välillä, kun taas valmiita kittejä sai 300-600 e hintaan riippuen minkä mallin haluaa. **EDITED AND REVISED 2-May-2012** IGNITION TIMING THEORY When a sparkplug ignites the fuel in a cylinder it takes time for the fuel to burn. In KDFI the routings for coil drivers are bit too small and they can burn because of too long dwell time. You provide grounds and +12vdc to the coils themselves, and then use the EFI to trigger a +5vdc low current signal to charge the coil to maximum dwell. However, we must not forget the factor at which the ECU can calculate timing. Home > RX-7 > Tech/Mods > Mods > Megasquirt > Programming The ECU (MS2) This section covers programming the MS2 ECU to run the 13B rotary. I've seen 3-4. It is important to do stall detection, with ignition and fuel timeout. The dwell time limit on the LS1 igniter is simply a safety limit so the driver doesn't melt down. The MS3X/V3. 45mm Length - 99. Does anyone know for sure? A guy my brother works with at Holden said they won't work in waste spark mode but I've found info on. Dwell time and distance to the point of interest for clinical treatment plans. 5" Splits (F) and 6" 3-way speakers (R) Precision response 4x 100w amp and 1000w mono 10" sub. 5 (mV) the user could adjust dwell in MegaTune until the displayed optimal mV measurement is close to the DVM DC (mean-voltage) mV measurement. then calculate approx what air quantity the engine is likely to inhale per minute, thus being able to work out how much fuel in theory you need to mix with that for it. I downloaded new firmware MS2/extra, upgrading from 3. Title: Megasquirt tunes to get you started. Megasquirt/MicroSquirt. Of course using CDI removes the dwell overhead but you can see the limitations of the software, and probably why there has been difficulty in achieving high RPM even with V1. 5mS in engines doing 10. 0 ms Dwell type: standard dwell. 00mm Stem Diameter - 5. The megasquirt processor is faster than any 80's era ecu and far easier to tune. These coils have the igniters built in, which makes for a much easier install. MegaSquirt Sucks. Characterization SummariesFord CalibrationsGM CalibrationsDodge CalibrationsMitsubishi CalibrationsSubaru CalibrationsHonda CalibrationsBRZ/FRS CalibrationsStand Alone CalibrationsFSAE Injector Calibrations. Unsupported ECUs: Megasquirt, Microtech, Adaptronic. Thanks for the support. After a lot of reading, I have found that the +12v start wire into the TFI module tells the distributor to ignore the spout - therefor reverting me to base timing. If you want to crank the dwell up higher, open the MS case while its sitting at an idle for a while, and put your finger over the VB unit. com FREE DELIVERY possible on eligible purchases. PH 4480 racing extractors lukey 2. This firmware's featureset has grown hugely and continues to be refined. This manual covers MS3X/V3. 50 at 14v is the correct and you also have your dwell time set to 0. 6 k pullup on the tach signal. Dwell, as used generally in an automotive context, describes the period of time during which current conducts through the primary winding of the ignition coil. There must have been a lot of '+' associated with that '100'. The coil start to charge, or on signal has to be generated completely. Harley-Davidson Fuel Injection basics It is a sad day in Hogville. INjector dead times, getting them right instead of using other peoples numbers Posted by turboglenn, Nov 3, 2011. The current ignition runs two double ended coils in wasted spark mode and the two channels control dwell by monitoring primary current. com 3-14-2008 I recently finished reading through all 16 pages of horror of My Old Rocs megasquirt install thread and I AINT SCARED! just as the title says, I want. Def buy the diyautotune megasquirt coils if you are between the two! The mercury marine of the same shell would absolutely not work though, despite being based on it. 11K RPM is not a problem. Cranking dwell = 4. MegaSquirt-II has a 'base dwell' (aka. As a default, the Canems software shows the main dashboard, though this can also. Available Source code means Endless Development. It is based on the 'rules of thumb' presented here: Making a Spark Advance Table. 0 amps for the maximum current. Check the laws that apply in your locality to determine if using a MegaSquirt ® or MicroSquirt ® controller is legal for your application. Similar Topics - MegaSquirt dwell coil Forum Date; Anybody running a mass air with megasquirt: EFI Tuning Questions and Engine Management: Thursday at 4:07 PM: Starting Megasquirt Install on 5. 5mm connecting rod and has the same deck height as the 36, so you can calculate some things from there. I have to verify the voltage output to the transistor is the same from the megaspark to the transistor as what the stock ecu sends to the. It is unlikely you will need to adjust these settings unless you are using aftermarket ignition boxes. MegaSquirt ® and MicroSquirt ® controllers are experimental devices intended for educational purposes. Title: Megasquirt tunes to get you started. The time required for the injectors to begin to open is referred to as ‘Injector Dead Time. x Not covered: • MegaSquirt-1. I had a chat with Ray about this this morning about how Megasquirt deals with coil dwell times of 3. The formula for the time it takes for an inductor to charge up to a certain current (assume t. Taking requests. Target Crank HP # of Injectors. These are the coils that Ron Tyler has used on L6s with a Wolf ECU as the trigger source. My Megasquirt Fuel Injection Turbo Buggy Build The box has no way of knowing this and will continue to calculate timing assuming that the trigger is where it expects it to be. I checked Megasquirt's site. To calculate your engine's theoretical knock frequency we use the simpe equation: 900/(pi*r) So using a 81mm bore we can calculate the following knock frequency: 900 / (3. 0 degrees is reasonable. Because of this the fuel is always ignited before the piston reaches the top so that maxumum presure can be made in the cylinder before the piston is on it's way down. When setting up the MShift™/GPIO ADC channels for 'non-standard' usage, there are a number of considerations: If you are using the sensor as one leg of a voltage divider, then you need to consider what the resulting voltage signal is. Fuel Type. Of course, you can also use a DVM and a separate dwell meter if you already have these testers. int dwell = 250; // dwell time in uS I hear the MegaSquirt project releases their schematics as open-source, so I might try to find their PSU and see what they came up with. lbs/hr *Limit maximum injector duty cycle to less than 90% for safe operation. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. It is unlikely you will need to adjust these settings unless you are using aftermarket ignition boxes. )MegaSquirt was designed by Bruce Bowling and Al Grippo in 2001. Pretty much the only thing that is difficult to do is the physical interface between the sensors and the Megasquirt. The coil is almost like a relay of sorts with the EFI just controlling the switching side of it. Also, to test the board I first had to build a Stimulator which was also a kit. 1,5 ms has worked for us. Just up it to 4ms or so and see if the issue goes away. One is "drift" or having the tune change after updating the firmware or environmental reasons (high MAT). Niehoff has individual injector connectors under part number 28419 (connector) and 28418 (sealing boot). Theres 2 ways you can measure engine parameters so the ECU can calculate engine load either via (MAP sensor + Throttle position sensor) or (MAF sensor- air flow). about 'Ignition coil theory and Ford TFI module questions', on Tue, 11 Nov 2003: So does 'arithmetic' - the arithmetic mean is 77. 5 dwell means ~ *2. Megasquirt Injector Upgrade? - posted in Forced Induction & N/A Power Mods: Hi All Ive purchased some yellow rx8 injectors that should be here tomorrow to upgrade my 1. MegaSquirt has been installed on thousands of engines from purpose built race-cars to restored classics. Since you are removing your AFM anyway, you should tap this into the new tubing you are going to have to create to replace the stock rubber hose. beware that the factory coil seems to need rather low dwell (not surprising from a 6cyl distributer setup), rather 2-ish (than 3-ish) msec. Thanks for the support. 4 (Includes also the version equipped with wasted-spark ignition) General Megasquirt EX is a programmable engine control system, based on Megasquirt v2. 6 с 4AFE мотор и оригиналното. measure supply current and calculate to be sure; or at least decrease the dwell until you experience misfire to see the range: *1. Fuel calculator gave me Forum: aftermarket engine management 08-15 mine is 3. 4 (Includes also the version equipped with wasted-spark ignition) General Megasquirt EX is a programmable engine control system, based on Megasquirt v2. (Warning! This article, and the setup discussed, focuses on the 1987 Toyota MR2 with the stock 4age engine and stock VAST ignition system. 0L DOHC, MS-3, weisco turbo pistons, eagle rods, precision 6265sc turbo, tial 44mm ewg, port and polished head, crane 18s, crane springs with titanium retainers, SS valves with over sized intake valves, 1000cc. Available Source code means Endless Development. com and we will get it put together as quickly as possible for you. These have an input resistance of ~1k and should work OK with the Megasquirt outputs. Megasquirt EX, Installation Instructions document revision 1. The mighty Harley is slowly loosing its carburetor. So there is actually a calculation which is laid out here so you can calculate the theoretical dwell time required given a certain inductance, a certain resistance and the target current that you wanna build up in your coil. 0 control board. Dwell, as used generally in an automotive context, describes the period of time during which current conducts through the primary winding of the ignition coil. 0 is the default, but anywhere between 10. I don't remember any mention of that causing issues. Harley-Davidson Fuel Injection basics It is a sad day in Hogville. ) If you are using a stock type coil and cannot find these specs, 2.
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