Help, Holley HP going 9.0afr on brake.
08-16-2012, 09:46 AM
#1
Help, Holley HP going 9.0afr on brake. I took my car to the track last weekend. My laptop was crap and I only managed to data log 2 passes. The first pass the car broke up until half track (showing dead rich). The second pass the car worked okay but it didn't pull until after the 60'. I went through my datalogs and my afr on the brake is 9.0 and even lower sometimes. I see two things that I think are going on. One is the tps rate of change adding fuel in when I go WOT on the brake and the second is going into open loop. The car runs and drives fine so I don't want to play the the TPS ROC too much. What do I need to do to get this thing to leave hard? Thanks, Carl.
11-27-2012, 07:53 AM
#2
Just thought I would update this for anyone else that is having similar problems. It ended up being the TPS rate of change. It would add so much fuel the car would go pig rich. Once I got it set right the car would pull right off the bottom and throttle response is excellent now. The car went from running 11.1's to 10.5's with no other significant changes.