I've been trying to troubleshoot a friends 01 Monte Carlo with the 3800 N/A motor. I'm not new to HP Tuners but am new to this platform.
The issue:
At 50%+ throttle, won't rev past 4K and starts bucking wildly around 3700 RPM. From the scan logs, the computer looks to be pulling fuel (maybe cutting out cylinders) on purpose. Happens in all gears.
What I've changed:
Removed a ton of timing to fix the KR
Ensured computer is seeing the gear selector so it does not think it is stuck in park/neutral
Reset the rev limiters for P/N to 7K just incase
Turned off all engine and trans torque management
Checked for trouble codes
Previously owner changed:
O2 sensors
CAT
Attached the last tune, scan logs and configs
In the scan log you will see the injector pulse width start dropping off at 3700 at WOT. If he backs off on the throttle to say 40ish %, it will rev out without issue. Symptoms match if trans/torque management/abuse mode was being triggered but that is now all turned off in the tune.
At this point, I've run out of things to try. Any suggestions of additional PIDs to watch with the config?