Car is breaking up at full throttle like it has an old school ignition problem, then it cleans up and pulls strong. Kinda hard to explain but here is what I have and what I have done....Have attached tune file and latest log using PLX wide band. Tune/Log is in open loop. Problem exists on bank 1 only as far as I can see.
495 HP LS3 new crate engine, e38 ECU, T42 TCM, 4L60E transmission.
PSI Conversions wiring harness.
Replaced fuel module and verified fuel pressure steady at 58 psi.
Swapped coils side to side.
Swapped injectors side to side.
Swapped O2's side to side.
At my wits end as to what could be the problem. Only thing I can suspect is an issue with wiring harness. Car drives great at part throttle. Only when you stab the throttle does it act like it's struggling up to rpm, then cleans up and hauls butt.....
Please help. I am ready to give up and sell this thing.....