Hey guys,
I'm having a weird STFT issue. When I'm logging just for data, or even just driving, in closed loop MAF only (no VVE) on decel above 45 mph DFCO does not kick on and STFT maxes out to 29.7% equally both banks lambda goes down to like .82~ depending on rpm. It will also max out STFT if I coast in neutral above 45 mph. If I get up 60-70 and make a hard downshift get the decel rpms up to around 3000-3500 it will correct it self and then for the remainder of that drive it will be fine. I've asked this in the HP tuners pages on Facebook no luck, searched google, looked around on here no with no luck. I have attached a short data log and the tune file I have on the car. Its a 2015 Camaro SS, TSP F35 cam, TSP 1 7/8" catless headers 3" Exhaust, FID 1000 CC injectors, 93 pump gas right now. Please help I'm pulling my hair out here and I don't have much hair