My car consistently will go rich on the dyno around 4,000rpms and up (It will drop from a 12.7 or so to 11.5). No matter where or how much fuel is commanded out, it still defaults to rich around 4,000. Any ideas what will override the ability to tune out fuel? Something is making it go rich no matter what the tune is telling it to do.
I dont have a copy of the tune, its on a friends laptop, but I am just searching for some ideas what to look at. Thanks!
01 Camaro SS A4, 4,000stall, 231/237 592/603 111.5, Moser9" 4.30s, LTs, Loudmouth-II, Lid & Bellow, NGK TR55s
98 Camaro SS A4, Single T70 FMIC
Considering thats right at the point where maf takes over fueling completely I would assume the maf hasn't been dialed in, could also be cat over temp, however without the tune or a scanner log this is just an educated guess.
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
Pretty sure we disabled the COT so I am leaning toward MAF calibration maybe.
01 Camaro SS A4, 4,000stall, 231/237 592/603 111.5, Moser9" 4.30s, LTs, Loudmouth-II, Lid & Bellow, NGK TR55s
98 Camaro SS A4, Single T70 FMIC
Same here, LTFT ruin my AFR as they go positive and I don't want to disable them..could it be because DFCO since it makes AFR go lean and trims go positive ?
I'm hitting 12.2 AFR where I command 12.8 at wot.
Am I losing performance for this?
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