My truck will not shift into O/D at WOT. I can keep it to the floor at 3500 rpms and it still will not shift. If I let off the throttle for a second it will eventually shift. I called Dusty at Hts, he seemed to think it is pcm or apps related. Just curious if anybody has an answer.
Nathan

 

I have the same problem while running full throttle, while using crazy larry&some on performance.

 

Mine is the same. I just hold the throttle at 3/4 the way till the torq converter locks up and get to about 60 mph then drop it to the floor