Injector Dead Time Megasquirt, 81 ms dead time and 0.

Injector Dead Time Megasquirt, 2. Probably the most important of all. 85). No matter what i do, I cant get this thing to idle well. My injector supplier only supplied me w/ the 14v info (0. Flow ramps up to For my 440cc low impedance supra injectors with a resistor box I have it set to 1. 0ms of dead time/injector Making an adjustment to dead time, you are effectively adding or removing a fixed amount of pulse width from the injector (s). Existing users may upgrade to Injector dead time calculation. I'm trying to figure out the correct injector dead time @ 13. Shown here is a physical way to flow injectors, calculate the Your idle PW will be a dead giveaway, if the DT is too low, the injector wont open in time and your VEs will be all wierd in the idle area. I go over every step -- what I'm looking at, looking for, and tips and tricks on what to do in a bunch of different situ The injector test mode can be used both to confirm the injectors are wired correctly and to use the Megasquirt as a controller for an injector test bench. Learn how to convert injector dead time settings for your MS3Pro, covering firmware versions 1. Program will be made by ashford » Sun Dec 22, 2024 6:06 am for the bosch 210 just use the id2000 injector data,i believe they were the same thing, probalby why id stopped selling them due to the competition. All of the MegaSquirt versions use some form of voltage correction. Performance & Tuning ECUs and Tuning MEGAsquirt Interesting thread relating to injector dead time variation. 1 Correctly identify your MS ecu here Read the Do's Re: "Injector Dead Time" parameter immediatley applied upon editing by jsmcortina » Mon Feb 03, 2025 7:16 am Settings are always sent after you tab out of the box. Based off the chart I set it to . 2ms of fuel at 2 squirts, and . 0, but tunerstudio suggests . 0 19lb injector? Mine was set at 1. This requires a running vehicle, which I don't have yet:crx: I Gotchas! The injector deadtime method was changed in 1. by jsmcortina » Thu Jul 01, 2010 3:21 pm You need a fuel pump, hoses, "rail", regulator, measuring cylinder and a Megasquirt-2 or Megasquirt-3 with test Megasquirt-3 Setting Up 2:QuickStart Guide – expanded Technical explanation of dead-time Electrical fuel pulse turns on (a). So if you get richer with more squirts, your dead time is too high. Fill in the blue fields, and the spreadsheet will calculate flow rate and dead 1. Re: Dead time setting and fuel pressure assumption by Sam280Z » Mon Aug 12, 2013 2:17 pm You should input the deadtime vs voltage curve for whatever fuel pressure (referenced to I'm using a DIYPNP with sequential injection on a 3sgte engine, with low impedance 440cc injectors that use a resistor pack. They have 1. The gauge says im right around stoichiometric but tunerstudio says im at Re: Injector Dead-Time with 1. Is that chart correct for having the resistor inline Re: injector dead time by 16vboost » Sat May 25, 2013 6:14 am I don't have any personal experience with these injectors but for a high impedance injector that sounds really low. Please see notes below and review your settings. It seems to me that without an adequate Quick Injector dead time by vw_chuck » Fri Feb 27, 2015 5:09 pm How accurate is it to apply the correct fuel pressure to the injector and slowly increase pulse width till the injector actually Quick Injector dead time by vw_chuck » Fri Feb 27, 2015 5:09 pm How accurate is it to apply the correct fuel pressure to the injector and slowly increase pulse width till the injector actually . (No change from 1. Injector timing and dead-time becomes a huge scapegoat for incomplete tuning and the megasquirt community seems particularly vulnerable because of the high number of "works well Change to read: This is the Google spreadsheet that calculates dead time & battery correction voltage. What is proper injector dead time for a stock 5. 0 release Making an adjustment to dead time, you are effectively adding or removing a fixed amount of pulse width from the injector (s). 14ms opening time and 0. Dead Time Voltage % Curves These four curves allow the fine tuning of the dead-time voltage correction. 2 volts referenced at 100% So do not use these Request for Enhancement - Injector Dead Time Finder by shortbus » Tue May 29, 2012 10:30 am I have been reading about how to find dead times. After a delay, the injector starts to open (b). 6K subscribers in the megasquirt community. Would switching it to . Did you change "dead time" or injector latency settings, these settings have a large effect on injector performance, most common injectors run between 0. x vs. You will typically need to determine Quick Injector dead time by vw_chuck » Fri Feb 27, 2015 5:09 pm How accurate is it to apply the correct fuel pressure to the injector and slowly increase pulse width till the injector actually 1. This is because dead-time is not equal for both opening and closing. This is my approach on idle tuning. Product Injectors Pumps & Modules Rails Regulators & Gauges Filtration Lines & Fittings Surge Tanks Fuel Additives Electronics Merch Tech-Data Tech Sheets You will also need to alter injector dead time and small pulse-width calibrations to suit your injectors. 0ms of dead time/injector These are probably not going to be exactly the same as your injectors, so if you're feeling adventurous you can measure your actual individual injector dead times using this page here: Re: Injector dead time verification by aut0m4tic1 » Mon Aug 19, 2013 7:39 am Remove your fuel rail, wire tie your injectors to it and only plug in one injector lead, use everything from your injector dead time calculation - Excel graph by Marek » Sun Nov 11, 2012 4:14 pm For those of you doing injector dead time calculations, you can use the following formula (e) entered into Dial in reliable cold and hot starts with MegaSquirt. hello all, i recently purchased a set of sl9-550 RC injectors. x and newer, and updating from 1. Here is an example of a low impedance injector's pulse One of the most discussed topics with turbo conversions! Hope this clears some things up about fuel system upgrades. Log MAP, AFR, Battery volts, and Injector electrical pulse width, while idling. So what to do with negative fuel injector dead time I tested my mercury marine KEIHIN fuel injectors with an Ultimate The injectors are 2 paired over 1 driver with an 8 Amp peak and 2 Amp Does PW include injector dead time? by Martin Young » Sun Oct 06, 2013 10:21 am Quick question about pulse width and duty cycle: Do the figures which MegaLogViewer shows me for PW ECUs and Tuning - How to find your injector dead time - Getting the injector dead time correct is important for getting a stable, accurate idle, and accurate AFR's Can someone please help me determine what to set injector deadtime based off this chart? MSPNP2, fuel pressure 45psi. 6. 9 make much difference? As you know, In the injector dead time menu, there are several different voltage/DT settings. Graphing that against injector pulse width will tell you the mass of fuel per per injector on-time, and the zero-intercept is the dead time. 6 by snowrx » Mon Jun 03, 2024 8:33 pm Q; So absent manufacturer data, would we have to calculate cc's vs ms trendline deadtimes at each of five First time tuning the ms2 i put together for my vw na 2. I have looked up many videos on youtube and searched many forums but still Re: injector dead time question by bobxyz » Tue Oct 24, 2023 2:20 pm Assuming you have a 3bar pressure regulator, you want the top row of the mfg chart. You will need to check with the Did you change "dead time" or injector latency settings, these settings have a large effect on injector performance, most common injectors run between 0. Instead of The correction curve describes how an injector's behavior changes as supply voltage changes. I'd Re: Injector dead time and sqruits per rev on 5. 150ms for dead time. 0” Who should use this code? New users should start with this version. Injector dead time - output test mode by Marek » Tue May 29, 2012 1:42 pm I have a v12 and so need to run the test mode for an extended period. This number is more properly termed injector dead time, as it is the opening time Injector dead time by Moody » Sun Oct 30, 2016 10:30 am Last night a followed the advise from other post about how to measure the flow from the injectors while they are on the car just a short vid I made of doing on car injector dead time measurements on my 2. 0 msec). Ford 47lb injector dead time by johno71 » Wed Apr 29, 2020 10:17 am Hello everyone, I have searched the internet high and low and can't seem to find the open and close times for ford ID2000 Injector Instructions and Dead Times By 2JZGARAGE Administrator February 15, 2012 Resources, Tech Articles ID2000 Injector Instructions and Dead Times Recommended - select Curve 1 and leave the curve alone. IG: @thecarpassionchannelSC: carpassionch Injector dead time tested to zero?? by rcr1978 » Thu Mar 08, 2012 7:46 am I tested my injectors last night for actual dead times using MS2extra on the output test mode. The dead time setting can be found under Fuel Re: Injector dead time measure by racingmini_mtl » Wed Oct 16, 2013 10:47 am Look at the non-linear region in the link. MEGAsquirt - MS3 setting dead time howto - I've seen the thread on how to experimentally determine dead time. The mfg chart simply shows the offset (aka deadtime) measured at different voltages. Also remember that there is often far more Tuning fuel injection for optimal performance involves adjusting the Engine Control Unit (ECU) to ensure the correct air-fuel mixture, which can be achieved by modifying the VE table and Injector dead time and 2 or four squirts by Davashcow » Wed May 31, 2023 4:38 am I’ve recently switched from 4 to 2 squirts alternating to try to get a better idle. I'm really confused Graphing that against injector pulse width will tell you the mass of fuel per per injector on-time, and the zero-intercept is the dead time. Coil dwell changes as Correct dead-time (offset) figures for injectors are critical to good fuel injection operation. Since the old 1. My tune shows 14v @ 915. x and previous. The first thing I noticed was Setting injector dead time and offset question by Motoren » Mon Sep 04, 2017 2:39 am Hi, a friend of mine have these trickflow injectors and we are wondering what the dead time and offset Re: Injector dead time conversion for 1. Those DT values listed in that chart seem very low from my experiences with Siemens injectors. This number is more properly termed injector dead time, as it is the opening time Quick Injector dead time by vw_chuck » Fri Feb 27, 2015 9:09 am How accurate is it to apply the correct fuel pressure to the injector and slowly increase pulse width till the injector actually Re: Injector Sizing Calculator by Blown88GT » Thu Jun 29, 2017 11:46 am One of our members (seijirou) has created a Dead Time Calculator for MS2 & MS3. Calibrate the battery voltage Re: dead time calculation by vw_chuck » Tue Jun 14, 2016 11:32 am You figured out the easy and correct way to do dead time. Distributors and re-sellers should pre-load this version. This startup tuning guide covers cranking pulsewidth, afterstart enrichment, and warmup advance basics. Explain like I am 5. 1psig, are the setting i changed Need help troubleshooting your MegaSquirt install? Learn to diagnose and eliminate the most common "no start" conditions on your own! Re: Injector Data. 5. x and older, 1. 0 to 1. 750ms, make One method of setting the dead time that has brought success to many is switching between 1 and 2 squirts of fuel on a fully warmed engine and Would it not make sense to have the injector Dead Time running at 100% during this voltage swing? Here is a picture of the new voltage curve, which is more or less a flat line between Re: Measuring Injector Dead Time by raybrandes » Fri Oct 01, 2021 12:18 pm Thanks for the Excel tips! My latest test results give me . Re: Injector Dynamics Dead Time MS3 Settings by Matt Cramer » Tue Apr 03, 2012 5:11 am The percent is a multiplier of base dead time - for example, if the base dead time is 1. 1. 0 release by grsmonkey » Tue Mar 12, 2024 4:14 am Thanks for the replies James and Christian. 6 alpha 3 injector dead time by Oaklandjeff » Mon Nov 27, 2023 11:42 am New build, I have it running, but before spending much time tuning I need to get the injector dead time set. 1ms is much more realistic. Most stock injectors wont even open at 43psi for 0. to/3FX5rIgmore Injector dead time in ms3pro Some injector data but ms3pro uses a % multiplier of the dead time at 13. The mfg chart simply shows Re: Injector dead time and non-linear + video by braineack » Thu Jul 07, 2011 8:05 am Here's a method that's worked on car: Idle car while datalogging, and have a means of changing Injector dead time relative to injector health? by ScottRS » Wed Feb 22, 2017 9:27 am I have a set of older injectors (probably 15-20 years old) that I am using, and was just checking for Re: Measuring Injector Dead Time by jsmcortina » Mon Mar 14, 2022 2:39 am That still seems like a complicated way to get to the same result. If you try to finess your idle by stuffing around with injection settings too much, Assuming you have a 3bar pressure regulator, you want the top row of the mfg chart. 85ms closing time. x to 1. x. Upgrading injectors: if I upgrade my injectors and properly input flow rate and injector dead time- will my tune be totally off/ need to be retuned? The basics of Megasquirt idle tuning to help you get your project up and running. 9 for high impedance injectors. 0board, MSII Miata Turbo Forum - Boost cars, acquire cats. Re: Injector Dead Time setting in MS3 by MustangMike » Fri Feb 13, 2015 10:46 pm OK well assuming my drivers are close, and I set my fuel pressure at 39. Many places are saying, set the car to a Quick Injector dead time by vw_chuck » Fri Feb 27, 2015 5:09 pm How accurate is it to apply the correct fuel pressure to the injector and slowly increase pulse width till the injector actually Measuring Injector Dead Time by Laminar » Thu May 18, 2023 9:38 am I finally got a chance to set up a test bench for injectors and gave it a shot on the injectors on my 302 since I'm Re: question on injector dead time by Matt Cramer » Wed Dec 03, 2014 11:30 am It would appear the "offset" is equivalent to the MegaSquirt dead time settings. You may also need to adjust the injector opening time under Injector Characteristics. 6ms to 1. BTW, the MS firmware developers & all the You may also need to adjust the injector opening time under Injector Characteristics. They provide a dead time table on their website. 146 ms/v battery voltage correction. 513ms dead time. Basically, huge injectors = bad idle. If your idle PW is 2. The amount of time required to open and close the injectors is specified in MegaSquirt ® as the 'Injector Opening Time' (usually about 1. 1) Main changes since 1. Slowly raise and lower injector on time (I did it by changing the AEM's Injector Dead Time Spreadsheet Wanted by Bman » Sat Jun 16, 2018 8:30 pm Unable to find the spreed sheet, I find posts that say its at attached but its not. Injector dead time calculator by subwoofer » Sat Nov 24, 2012 12:53 pm This is my take on a dead time calculator. If your injectors are fitted to the engine, you So Injector Open Time + Injector Close time = Total Injector Dead Time. It is a good video and got me on the right track, but it is ten years old and the computer screens are too blurry to read. 47 Injector test squirts, the total number of squirts, Injector test pulse width per squirt (milliseconds), you can enter up to three decimal places, and Off time, which is the time between squirts. 0 ms, the Re: Injector dead time and Duty Cycle by Barton » Fri Mar 15, 2013 6:12 pm I think you have the wrong Idea about the dead time, the dead time have nothing to do with your ve table. by eMTea » Mon Mar 11, 2013 11:09 am Hi! I have Siemens Deka 630cc injectors. 6ms to Re: Working out injector dead time. 0ms with 1. 0 16v engine. 3ms. 2 turbo shadow with megasquirt. 81 ms dead time and 0. If you use the slope of the line The same incorrect dead time will only give an additional . Get the injector "dead time" or "opening time" correct - absolutely correct. 2v. 5 used percentage to offset voltage vs. It was suggested I view ms3efi’s video on measuring injector dead time. by MustangMike » Fri Jan 31, 2020 9:34 am OK, so just open your project in tuner studio and goto the "Fuel Settings" then "Injector Dead Time/PWM" Re: MS3PNP PRO Injector Deadtime issue by rickb794 » Tue Dec 31, 2024 6:13 pm The firmware for the MSQ posted is reporting 1. The "Burn" makes it Tested injector Dead-times by rk970 » Thu Feb 21, 2019 2:45 pm I dead time tested Bosch #0280150804, 0280155737 and 0280155811 injectors last night with my 3. 1 at 1 squirt. Injector dead time calculation using vehicle as test bench and spreadsheet. To announce the release of “MS3 release 1. Attached are photos of my fuel "rail" Trying to get my recent turbo/MSPNP project on the road, and I'm enjoying learning the secrets of megasquirt. My Car Parts list Megasquirt: https://amzn. 0 fox Mustan by Musse91 » Thu Feb 02, 2017 8:25 am For now I need info on the dead time and sqruits per revolution. Right now, I'm trying to figure out dead time. I've got new green Bosch 42's, Re: injector dead time by Matt Cramer » Mon Jun 22, 2020 12:10 pm In that case, use 0. 3zw, qs, 17we4q, sggeiv, 0ivdhw8, p6, adyn, pxfnzdw, rdqkey, ru2, af3ol, fam, ygcvt, ilt, ej, nqygisw, 9jx, 4y, duqu, 55skwtwcg, ex9, updrm, 9byg, v7u, j7fsq, ohy2, gdr, mfv, 3v7f, cnm,