ok everyone im new here, but ive done alot of reading and can't find anything to help. I have a 2001 2500 24v 4x4 5speed swapped. The truck has the auto pcm but manual tranny harnes. as far as upgrades i have 40 over sticks, s&b cold intake, airdog, and a V2. an tips or sugestion as to why i cant over 2000 rpms?!?!?!?!?!?! thanks in advance  for the help!!

Could be the torque limiter program in the auto trans PCM holding back the VP44. 

Any way to bypass this, or tell it to not torque limit??

Any codes? will it go over 2000 in neutral?

the only codes i have is for my grid heater. due to it being deleted lol. But i was able to fix my issue. i removed my auto pcm and installed a used M/t pcm. my problem was fixed. i know have full rpms!! just gotta learn how to tune my V2.. thanks for the help guys.