At track need help :) PL file attached

[Justa6MB]

I have a 6.0 TT chip and it started adding max fuel on 2nd qualifying run but I can't understand why? It got pig rich and lost power so I don't think it's lean. Running 110 fuel and alky shut off. About low 80 temps. Have 1 hour before elims. Thanks

 

[turb0buick57]

I have a 6.0 TT chip and it started adding max fuel on 2nd qualifying run but I can't understand why? It got pig rich and lost power so I don't think it's lean. Running 110 fuel and alky shut off. About low 80 temps. Have 1 hour before elims. Thanks

Looking at your powerlogger run, your chip was made for alky and your saying you have the alky turned off. Your 1st/2nd and 3rd/4th gear fuel settings in the TT chip are calling for 10.8 afr in all gears so it looks like the computer was adding max fuel trying to get to that air fuel ratio because your alky was off. The fuel curve in the chip is probably based for alky to also be spraying.

with 110 octane you may have been able to target somewhere in the 11s air fuel ratio and the turbo tweak chip wouldnt have added that much fuel to compensate.

 

[Justa6MB]

Thanks for the reply. Well I ran my elimination yesterday and lost to a crotch rocket. It spun pretty bad off the line and that was that. Anyway it did the same thing as the previous run which was adding max fuel. I knew that 10.8 would likely be too rich for race fuel, but I planned on leaving it there while I added some boost. I'll attach my first run, which you'll see the chip held the AFR pretty well right at 10.8 with minimal correction, and it ran 7.53 @ 92 ~ 11.81 @ 117. Injector duty cyle was 82 ish %. So on the 2nd pass - which is the log in the first thread, I added 2 ticks (2#'s) on the AMS500. I don't understand why there was a dramatic change? The air changed throughout the day? Also should I have turned the Alky on even with the 110 fuel to cool the intake charge? I'm logging intake air temp in the upper plenum also. I'll post on the TT Forum but always interested in other opinions too. Thanks guys.