I have a heavily modified 2023 Camaro ZL1 1LE with manual transmission. The engine is fully built, 2650, etc. I'm in the process of getting the tune dialed in, but I have this problem where after a WOT shift from 3-4 (maybe other gears too) the fuel cuts until I wait for an extended time or I release and repress the accelerator.


I feel like I've nearly ruled out everything under Engine->Fuel->Cutoff,DFCO. The engine makes over 1,000 hp so I've had to work around some of the limits of the torque modeling. Something could be off there. Not sure.


I have attached the original tune, the current tune, and a log showing the issue. Pay attention to the wideband and you'll see the fuel is very delayed after the shift.


Any help would be much appreciated.

016 2023 Camaro ZL1 1LE.hpt
016.shiftFuelCut.hpl
000 Stock ECM.hpt