I have a RPM trans and my 1-2 shift is extremely hard on very light throttle applications. My tuner has decrease shift pressures and even added TM but doesn't seem to help. Shift is fine at WOT just at very light throttle applications is when it does it. What do I need to do

 

Mine is Much lower than stock Trying to find the thread where I posted the pressures

 

Your on the stock Torque converter right?

 

You thinking it's staying locked during shifts?

Did he increase the shift times any?

 

naw nothing like that... When i installed my shift kit and still had the stock TC, it had teh worst 1->2 shift at low throttle....

 

I'm on a 2600-2800 stall

 

I wondered if it has something to do with the TVS and MAF?? Right now when it shifts if you are standing outside watching you can see the shock go to the rearend as you see it shift. I'm anticipating shift and letting off right now.

 

there is a similar thread like this some where from a couple months ago. I'm at work so cant do much searching to find it.
I know I posted my pressures in it but he ended up finding a different solution.

 

https://www.performancetrucks.net/fo...hift+pressures

This one maybe??
I'm using HPT

 

common issues with the 4L60e and shift kit. I run lower than stock pressures in the lower area of the tables for the 1-2 and it's still a good bump at low throttle.