Today i left at a stop sign full throttle and when it got to about 60 to 70 mph it felt like the truck couldn't go any faster anymore but it wasn't reving up like it would if it was slipping then i went down to 30 mph and went full throttle and it never missed a beat it pulled hard all the way to 80 untill i let off my tranny is stock with 98000 miles on it and i have a ppe standard and it was set at level 3 120hp. i now have it on level 1 or could it be a different problem?
