Hi guys, I am having trouble with the shifting of my 4L80E. I have been successful removing most of the torque management from the trans but cant seem to change the shift points? Does anyone have a modified T42 4L80E tune that I can take a look at?

I want to shift around 6200 RPM and currently im at 5500. Right now im working on my tune and pushing about 12 pounds of boost threw the stock 4L80E which is a blast, but it could be that much better...


I will soon be installing the HD2 kit in the trans, will that change anything?


Here is my latest tune.

Nicks Colorado 30.hpt