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KingLT1 · 10-12-2022, 09:27 AM

I don't see a lean spike in your log. What I do see is you low side is a bit low and it's too rich. It's rich because your LTFT are positive and the ECM takes the last read positive number before entering PE and adds it to the PE fueling. Need to tune MAF down in the closed loop region so you have negative values this way no fuel is added when you go WOT. Also getting random KR which could be causing power to drop.

I would adjust MAF so LTFT are in the negative 3-5% range, raise low side pressure to 70, and fix KR.

Also, your wideband reads really erratic. Never seen one do that.

10-12-2022, 09:27 AM	#2
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,798	I don't see a lean spike in your log. What I do see is you low side is a bit low and it's too rich. It's rich because your LTFT are positive and the ECM takes the last read positive number before entering PE and adds it to the PE fueling. Need to tune MAF down in the closed loop region so you have negative values this way no fuel is added when you go WOT. Also getting random KR which could be causing power to drop. I would adjust MAF so LTFT are in the negative 3-5% range, raise low side pressure to 70, and fix KR. Also, your wideband reads really erratic. Never seen one do that. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA Last edited by KingLT1; 10-12-2022 at 09:50 AM.