Immediate Engine Torque Source - Axle.. Can we please have Gains -> TM Spark

[Alvin]

First, I don't think GM does a good job at this on factory cars/tunes. Someone should be beat with a cane for letting some of these new cars leave driving so poorly.

The problem is after leaving a prolonged idle or while using rev matching; Immediate Engine Torque Source will change to axle and in that mode specifically the TM Spark advance corrections are entirely too aggressive. If you creep a Gen 5 car around in a parking lot you'll feel it either dragging like the brake is on or you'll get what feels like fast torque exit on gen 4 cars. Its quite literally a TM induced bucking. The timing will bounce some 20 degrees and when the mode returns to none it goes from subtracting 20d to nothing giving you a bang.

We can fix this by limiting by setting TM spark minimums higher but this is not a good fix because there are other TM's that should be allowed to pull the full amount.

Can we please have the gains to this torque management? Maybe it is a look up table torque error vs. retard? IDK

[ddedrick85]

First, I don't think GM does a good job at this on factory cars/tunes. Someone should be beat with a cane for letting some of these new cars leave driving so poorly.

The problem is after leaving a prolonged idle or while using rev matching; Immediate Engine Torque Source will change to axle and in that mode specifically the TM Spark advance corrections are entirely too aggressive. If you creep a Gen 5 car around in a parking lot you'll feel it either dragging like the brake is on or you'll get what feels like fast torque exit on gen 4 cars. Its quite literally a TM induced bucking. The timing will bounce some 20 degrees and when the mode returns to none it goes from subtracting 20d to nothing giving you a bang.

We can fix this by limiting by setting TM spark minimums higher but this is not a good fix because there are other TM's that should be allowed to pull the full amount.

Can we please have the gains to this torque management? Maybe it is a look up table torque error vs. retard? IDK

I'm having the same issue with my 17 Silverado... Have you figured anything out?

[Alvin]

This particular car (C7 vette) had mismatching front and rear tire sizes. Not factory. I never could get it to act right. I think it thought you where slipping the clutch with the front/rear speed mismatch.

[TriPinTaZ]

Virtual Torque is where you influence this behavior. Minimum Spark is just the "floor" that Torque Management Advance is allowed to reduce torque(via timing) to reach target torque requests.