94opalgt said:car made 301hp and 332tq with bbk shorts, o/r h-pipe and flowmaster cat back
put mac long tubes and prochamber on
car made 309hp and 326tq after. but carried power further in the rpm's than with the shorts.
they are a pain to put on.
and the prochamber is sweet, car isnt even loud till you put your foot in it.
my .02