I have noticed on my 05 hemi that when I am accelerating I feel a surge especially through 1, 2 and 3rd gears. If I keep it at a steady speed it runs great but around town I can watch the rpm gauge and it kind of jumps a few hundred rpms at a time instead of gradually building rpms. It doesnt do it at highway speeds either and It doesnt do it all the time. The only problem with the truck is the rotors need turning but I dont think thats it because it only does it accelerating. The truck has 62k miles on it.