CataclysmGT

Besides the $300 difference in price, which one is the better product?
What I am planning right now, is to add an O/R pipe......either Mac or Pypes, and get a tune from Brenspeed as well so that my car can make more use of the Stingers, O/R H, and Roush CAI.

WALLACE

well... both the h pipe and prochamber produce a deep low tone as opposed to the x-pipe w / it's
high pitch. but the prochamber will produce a deeper rumble w/ it's design. what you have to do isconsider whether you're gonna have cats. or off-road pipes. then take into account the muffler design....
straight pipe or chambered.
what i found, is that the prochamber was louder w/ a chambered mufflers... when i had the loudmouths(straight pipes)on it seem to quiet down, did'nt like that.

CataclysmGT

I have FRPP Stingers......................I'll rip an email to Brenspeed and see which one they like better.