I'm running a moderately modified 6.0 in my 99 camaro z28 and have been working the tune for a few months now. The tune is great on the street and I'm focusing now on 1/4 mile performance. Fueling at WOT is getting better ( working my way leaner slowly ) but I'm running into some inconsistencies in my data logs for actual AFR values (wideband) as compared to commanded values. At the track last night it was about 80 degrees and I was seeing IAT temps in the 120 range. The fueling went rich at these temps. With IAT temps below 100 the fueling was much more consistent and closer to the commanded ratio's. Letting the engine cool for 45 minutes made a big difference compared to a hotter engine run.
I know the the intake air temp will make a difference in fueling calcs but it goes off significantly after about 105. Is there any way to adjust for this or is this an ECM calculation that I've got to live with.
Letting the engine cool for 45 min between runs kinda sucks.