"Cherping" 1-2 WOT 4l60e

[AJK13]

265/70/17 tires, 4.56 gears, corvette servo. I'm trying to smooth out 1->2 at WOT. I've decreased shift pressure in pattern X. Shift times are set to .2. Any advice?

[VodeAn]

You are trying to stop the tires from squealing between shifts?

Make sure you have torque management between gears. For now set the transmission torque management tables back to stock if they aren't already (in the transmission torque management tab, not the engine one)

Set desired shift time to .300 seconds

With a desired shift time of .200 seconds the pcm will be adding lots pressure in an attempt to get a very fast shift.

Also make sure your gear and tire size are correct, mismatches will cause harsh shifts.

[AJK13]

I made those corrections but it still did it. It's also a truck and a bit light in the rear. I'll post the tune and maybe someone could glance at it.

[APS]

Broken accumulator spring usually