Throttle closing on C7 at 5500 rpm?

[rynez06]

I noticed on a C7 I finished tuning this week that if the Engine-> TQM -> General -> PEAK Torque table isnt properly calibrated after adjusting the DD table the car will NOT enter V4 mode. I dont know how it works on SC applications but setting the PRatio from .900 to 1.0 will also keep the Tune/CAI cars from entering v4 mode.

i have noticed this too... still a whole lot to learn on these cars

[Higgs Boson]

Did you leave COT Enabled? Disabling that will prevent AFM also.

[Mez]

my c7 is still stock and it has one or two points at mild accel where you can feel it surge like you hit the pedal sharply even though you kept it steady. I need to log it to see what exactly it is.....

like second gear around 30mph and 2000 rpm accelerating normally to third.

Same here.

[yonson]

my c7 is still stock and it has one or two points at mild accel where you can feel it surge like you hit the pedal sharply even though you kept it steady. I need to log it to see what exactly it is.....

like second gear around 30mph and 2000 rpm accelerating normally to third.

Same here.

Interesting, I've seen this with the automatics, but haven't noticed it with the manuals, it's driving me crazy on the autos... With boost it is amplified, The 5.3 trucks seem to be the worst, and the 6.2 trucks seem to be the best, the Vettes are somewhere in between...

[GPGTP]

the 6 cylinder cars do it as well, I'm convinced the cause is from unmapped tables. torque scanning is very limited on the 6 cylinder stuff.

[02Ls1]

So have you made it work?
having an issue with a truck, this one opens but after a shift it close the throttle half and opens up back.

[GPGTP]

That's just trans torque management

[Raddtadd]

Bump, maybe someone can help me figure this out.

I understand how the TQ tables work and i know in the sticky it says "Maximum Engine Torque: The maximum possible engine torque, this should be higher than Predicted Engine Torque Cmd otherwise it is limiting" But it really doesn't say what table defines the Maximum engine torque limit. I found another thread where it was never answered. This is the first c7 I've messed with so still trying to figure out all the new changes.

Basically the Throtte closes above 5k and obviously power falls away.

[lt1z350]

Yes thats in the tcm. My 2017 zl1 was terrible from a dead stop or on a roll. Unlocked tcm and raised my torque limits on the tcm and now tps follows the foot to the tee. Ripping off 1.60 60 foots tires on fire and when was stock it was lucky to get 1.70 with zero wheel spin. Also on down shifts it now snaps open fast rather then the slope you probably see now as I did.