4l60e soft 1-2 WOT
Trans is being controlled by an EZ-TCU.Stock stall 3500 on the way.
At part throttle the 1-2 shift is fast and firm, but at WOT its soft just like it was stock.
Any ideas on what it could be?
If fluid level is good.......Next up is to hook up a pressure gauge to see if pressure is dropping at high RPM.

