Have a buddy who is having some troubles with his tune for the big turbo, done by a reputable shop. Leaving names and such out of it, just need advice based on the data please. Data is showing throttle closures at higher RPM, very high STFTs to trim fuel out and is knocking predominantly on cylinder 1 consistently at WOT. Graphs of the power and AFR lines are a bit wonky. Tuner is saying it needs more fuel (despite the STFTs showing fueling pulled), but LTFTs were not logged to get net fuel trims. Am I missing something or shouldnt he have LTFT and STFT both to calculate total trims to determine what to fix? Does adding more fuel make sense here with the STFTs potentially pulling up to 25% fuel? Uploaded files to datazap.
https://datazap.me/u/sneakypete/big-turbo-fist-log-stft-and-knock-issue?log=0&data=5-9
https://datazap.me/u/sneakypete/big-turbo-fist-log-stft-and-knock-issue?log=0&data=5-9
