Originally Posted by HDDP
So, even if I increased the LTFT & STFT via my aftermarket software, the ECU will continue to retard the timing more to adjust to this level... He believes that this is part of the CA CARB emissions program that is built into the software and is "locked-out" per federal regulations...
That's the rub about speed density, timing and fuel are locked together.
My point was your AF might be fine, with a lot in reserve. find a way to map some EGT's under load. The timing is the one that looks extreme. Is there a knock sensor on the CF's??
And yes a cold air kit would be worth the effort with those IAT readings.
Keep us posted, I enjoy lurkin and learnin.