Hello everyone. This is my first time on TDR as a member and i love it so far. I just have some questions. I have an 04. 5 and it needed some more power so i got a Dr. Performance stage II module, its been doing good but recently i upgraded my tires and it seems to be noticably slower. I have alot of Fords and Durmaxes with upgrades in my area. Un fortunatly i'm the only one with a Cummins, and get picked on quite a bit. I was wondering how the DR P is in the long run for my truck and if i should get rid of it and get something new and what?