I just put in a 2800 and it works PERFECTLY, cant even tell I have a stall until I mash the gas..

Here is the problem;

Usually when going WOT from a roll I start in 3rd and the car (99) automatically shifts into 4th, now the car pegs redline and I have to let off the gas and punch it again before it will shift

Tonight I went WOT in D and it did the same thing...any ideas of the problem??

After it catches it hauls *** but Id like to keep the pedal to the metal in entire run.

Thanks

 

need to adjust shift points, etc.

 

Thanks, how come it only happens sometimes though?

 

.....hpp3 fix it?