stariondreams Posted October 14, 2014 Report Share Posted October 14, 2014 What is the true way to set Voltage correction .The reason I ask is my car like the setting of .40 but ms say's thats not normal is this because of large injectors Link to comment Share on other sites More sharing options...
scott87star Posted October 14, 2014 Report Share Posted October 14, 2014 You have to measure it. It is the time in milliseconds added to or subtracted from pulse width based on battery voltage. So if a given pulse width is 2.0 at 13.5 volts and the correction is 0.20 mS/V then the pulse width at 12.5 volts would be 2.2 mS to inject the same amount of fuel. 0.40 does sound kind of high, I don't think it's a function of injector volume delivered, you could always jump on www.injectordynamics.com and look at their data. http://injectordynamics.com/wp-content/uploads/2013/03/The-Library.jpg Are you looking at the titles of the books? If you have a test apparatus you can run the injector at different voltages and get the correction. You can do the same for dwell battery correction, it takes longer to fully saturate a coil (or injector) at lower battery voltages, but again if the information is not provided by the supplier of the coils or injectors in your case you have to build a test system to measure it. Or guess, which is almost always less successful. Link to comment Share on other sites More sharing options...
psu_Crash Posted October 14, 2014 Report Share Posted October 14, 2014 I'd like to read THOSE books I have left mine at the default levels. I don't see any issues but I'm sure it's not optimal. Are you getting wild voltage fluctuations? BattV should be pretty steady the entire time. Give or take a couple hundred millivolts Link to comment Share on other sites More sharing options...
scott87star Posted October 14, 2014 Report Share Posted October 14, 2014 I just did go over to the injector dynamics site and check, their 850's have a 0.09 mS voltage correction and the 2000's are 0.06 so it probably does not correlate to injector size. Link to comment Share on other sites More sharing options...
stariondreams Posted October 15, 2014 Author Report Share Posted October 15, 2014 my battery voltage is pretty eratic at idle for some reason car runs very good i just have these small concerns that i know need to be adjusted Link to comment Share on other sites More sharing options...
psu_Crash Posted October 15, 2014 Report Share Posted October 15, 2014 Shoot me a log and your tune. I'd like to see where you're at Link to comment Share on other sites More sharing options...
stariondreams Posted October 17, 2014 Author Report Share Posted October 17, 2014 https://www.mediafire.com/?pto98ceh4kc07t8 log https://www.mediafire.com/?pto98ceh4kc07t8 tune Link to comment Share on other sites More sharing options...
scott87star Posted October 17, 2014 Report Share Posted October 17, 2014 Your files don't show unless I join and I ain't joining. Link to comment Share on other sites More sharing options...
stariondreams Posted October 17, 2014 Author Report Share Posted October 17, 2014 oh dahm who else can i use to host Link to comment Share on other sites More sharing options...
psu_Crash Posted October 18, 2014 Report Share Posted October 18, 2014 (edited) Clicking on your links just opens up my mediafire acct But the link you sent me via PM works fine. Looking at your battery voltage it is a little noisy but I don't see any big spikes indicating a wiring problem. I had similar problems with a noisy BattV signal and installed a 47uF capacitor between Q3 and Q9 to help filter out noise induced by using the PWM circuit. It worked wonders. I don't see any PW spikes caused by the battery noise though so I don't think it is causing you any problems. Edited October 18, 2014 by psu_Crash Link to comment Share on other sites More sharing options...
stariondreams Posted October 19, 2014 Author Report Share Posted October 19, 2014 https://www.mediafire.com/?h7k7ju6xtzos09z tune https://www.mediafire.com/?h7k7ju6xtzos09z lastest data log i got voltage correction down throttle seems more crisp now I have to do accell enrichment's which i am still learning that seems tough to me. Link to comment Share on other sites More sharing options...
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