taylorsamuel790@gmail.com Posted January 16, 2023 Share Posted January 16, 2023 (edited) trying to get car to run e85 randomly dies tho while idling after about maybe 6 or 7 minutes was wondering if i uploaded the log someone might be able to tell me whats happening and why? 16-01-2023 06-26-59 PM Log.teclog Edited January 16, 2023 by taylorsamuel790@gmail.com Quote Link to comment Share on other sites More sharing options...
Puffwagon Posted January 17, 2023 Share Posted January 17, 2023 Most of the log is in closed loop, except for the very start and the very end. While in closed loop the stft appears to be eventually bottomed out at 0.7 lambda, then it quickly goes to 1.0 lambda and it stalls. You can see it changes into open loop at the same time, hence the change in commanded lambda and all of this points to your injector data being miles off. The car should be idling with only a couple of percent trim, not 30%. Quote Link to comment Share on other sites More sharing options...
taylorsamuel790@gmail.com Posted January 17, 2023 Author Share Posted January 17, 2023 ok yeah that sounds like it definitely could be it mate.. is it possible to put my standard injectors backin and maybe merge fg f6 injector data and start from there? least ill have a starting point so to speak then where as with these 1250cc sonic injectors i couldnt find any data on them anywhere so kinda left me in the dark from the start ya know what i mean... Quote Link to comment Share on other sites More sharing options...
taylorsamuel790@gmail.com Posted January 17, 2023 Author Share Posted January 17, 2023 1 hour ago, Puffwagon said: Most of the log is in closed loop, except for the very start and the very end. While in closed loop the stft appears to be eventually bottomed out at 0.7 lambda, then it quickly goes to 1.0 lambda and it stalls. You can see it changes into open loop at the same time, hence the change in commanded lambda and all of this points to your injector data being miles off. The car should be idling with only a couple of percent trim, not 30%. ok yeah that sounds like it definitely could be it mate.. is it possible to put my standard injectors backin and maybe merge fg f6 injector data and start from there? least ill have a starting point so to speak then where as with these 1250cc sonic injectors i couldnt find any data on them anywhere so kinda left me in the dark from the start ya know what i mean... Quote Link to comment Share on other sites More sharing options...
Puffwagon Posted January 17, 2023 Share Posted January 17, 2023 1: force open loop 2: change entire base fuel table to 0.8 3: adjust low slope until the car starts and idles at 11.8:1 afr 4: stall up the car in the drive way and adjust high slope until it stays at 11.8:1 when stalled up This will get your slopes a lot closer to where they should be and the car will probably drive fine. Put it back into closed loop and put your base fuel table back to where it was. If it runs lean at wot, lower the high slope. If the idle trims are more than 5% adjust the low slope up or down a little bit. This is a very basic yet effective way for the average person to get their car driving with unknown injector data. Quote Link to comment Share on other sites More sharing options...
taylorsamuel790@gmail.com Posted January 17, 2023 Author Share Posted January 17, 2023 mate once again thank you very much for your help ill have a go and ill upload a new datalog and see what ya think Quote Link to comment Share on other sites More sharing options...
Puffwagon Posted January 17, 2023 Share Posted January 17, 2023 You would need to have a dlp and your wideband set up for me to be able to do much more. I emailed them ages ago about these injectors and I got this back. You might have some luck with that as well as using the injector dynamics spreadsheet. Here is the data landing page, your injectors are around 1370cc with the standard 4 bar reg. Quote Link to comment Share on other sites More sharing options...
taylorsamuel790@gmail.com Posted January 17, 2023 Author Share Posted January 17, 2023 41 minutes ago, Puffwagon said: 1: force open loop 2: change entire base fuel table to 0.8 3: adjust low slope until the car starts and idles at 11.8:1 afr 4: stall up the car in the drive way and adjust high slope until it stays at 11.8:1 when stalled up This will get your slopes a lot closer to where they should be and the car will probably drive fine. Put it back into closed loop and put your base fuel table back to where it was. If it runs lean at wot, lower the high slope. If the idle trims are more than 5% adjust the low slope up or down a little bit. This is a very basic yet effective way for the average person to get their car driving with unknown injector data. how do i force into open loop man? Quote Link to comment Share on other sites More sharing options...
Puffwagon Posted January 17, 2023 Share Posted January 17, 2023 On 12/29/2022 at 4:45 PM, Plumbs said: @Bill found it and posted pic for anyone wanting scale their injectors ! Cheers . Quote Link to comment Share on other sites More sharing options...
taylorsamuel790@gmail.com Posted January 17, 2023 Author Share Posted January 17, 2023 13 minutes ago, Puffwagon said: nice thanks heaps bro, and so then just 0.8 on auF0172? or? Quote Link to comment Share on other sites More sharing options...
Puffwagon Posted January 17, 2023 Share Posted January 17, 2023 Yep. You don't want it much leaner than 12.5:1 while stalling up which is the reason to have it that rich. You could just as easily put 0.81 or 0.85 in there. Be careful when stalling it up that you don't make all the boost and break the driveline. Making 5psi should be enough to get you on the road and able to tune further from there. This chart will help a lot while you're learning, it's an afr conversion chart, if the link dies just google it again. Quote Link to comment Share on other sites More sharing options...
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