Hey guys. I've done some initial data logging (on a DynoJet dyno I should mention) on a 07 Cobalt SS with a stage 3 ZZP kit. A couple of things that initially concerned me:
the TPS is not making it to 88% on all the runs at WOT. I'm guessing it could just be dirty?
The injector duty cycle seems really low for 60lb injectors. 29% is the highest i've seen. I have an external Wideband moduel with the Dynojet and its reading 11.7 to 12 afr at WOT so that seems ok, but i've seen others with similar setups with their duty cycle well over 50% so i'm very concerned.
The fuel trims are not making sense. There's a bunch of areas in the STFT that are showing lean, but LTFT shows no positive values. Whats going on here?
I've attached the file for you all to have a look at. Thanks in advance!