We finished up a 13 Camaro LSA/6L80e swap. Motor is basically stock with an intake and a smaller upper pulley (10psi is what its making). The car runs and drives totally fine. HOWEVER, there is a small miss that happens randomly. You can hear it but cannot feel it. If you look at the log, everytime this blip happens bank 2 gets lean for a split second (2m20sec is a couple). I have done just about everything I can think of with 0 success. Any input is welcomed.
So far I have..
3 different sets of plugs
2 set of fuel injectors
Cut the coil pack and injector wiring out of another harness and ran it right from the pcm to another set of coils with new wires and injector clips.
Another pcm
Ran a ground from the pcm to battery.a
Ran ground from main harness ground to battery.
Smoke tested the intake, no leaks.
confirmed fuel pressure at idle and drive.
The only "odd" thing to me is that with this pretty much stock engine, it wants 30% more fuel pretty much everywhere with just the 4" intake and filter and slightly smaller pulley.
02-mis.hpl052620.hpt