seems like we are all having the same problem
u have the same issue and u got the tuner right there with u?? uh oh
i dont mean kn ock like engine knock, i mean knock like the engine will rock back and forth, and my exhaust sounds like shit...
DUDE wtf!!! i have that too. i thought motor mount would cure that.. did ur new tune solve it or wut? cuz if not then i may have to go thru a shop with hpt.