2013 Suburban 5.3
LS7 MAF, LS9 injectors, LS9 MAP sensor, 66mm turbo, PRC 2.5 LS6 heads and TSP Stage 2 VVT cam.
I have the tune to force open loop and disable SD. Driving around logging MAF Hz via histogram and wideband, MAF curve so far looks great and the truck runs amazing. Problem is, as soon as I hit BE at 105kpa it goes from EQ Commanded .999 lambda to .833 and stays there unless I shut the truck off and restart. Have not started to tune boost enrichment yet so it's set rich. At a loss on why it's doing this.
2barOSEdit5.hpt