[boosted5]

Having an issue where the car struggles between 3200rpm and 4800 rpm boost on my dash shows ok. Between those two rpms I get stumbling power at full throttle and if I let off the throttle the car jerks pretty noticeably. I am running procede with current e85 maps and car was running fine till two days ago. No changes were made to the car. I am new to data logging and need some help diagnosing this issue. Any suggestions such as what channels to log would be greatly appreciated.

[enrita]

just log the std one already setup

[boosted5]

I have made some changes so I am not sure what are the std ones that were there before.

[enrita]

just delete the procede folder on your pc and redownload it.

[boosted5]

Thank you enrita, so just log with the std values and report back here so one of you can help? ?

[enrita]

yeah but you might want to research how to use the procede logging etc before actually posting.

[boosted5]

Any ideas? I'm pretty sure I'm maxing fuel trims but the question is why? I went ahead and put in 93 today and same thing happens..above 5000 car is still a monster..

[boosted5]

also getting dme code 10721? anyone?

[OpenFlash]

Looks like there may be too much ethanol in the fuel you used in your last fill up. I see this from time to time because e85 is regulated like regular gasoline. Which means it can range from 60% to 90%. Which is why you had no issues for 2 month and all of a sudden, you do now. This is one of the shortcoming of mixing e85 without a flexfuel sensor. You don't always get what you ask for. The best thing you can do is burn off the fuel in your tank and then start fresh. Maybe start with mixing 40% e85/ 60% gasoline and go from there.

[boosted5]

Thanks shiv switched back to the 93 oct maps and car is fine, will update with results after my next fill-up .