Flowmaster cat-back
 

ok i have a 98 gt auto and i just had my flowmaster american thunder exhaust system put on and it sounds exactly the same as stock!! is there silencers on the mufflers or sumthin??

It will take a little of driving around to break it in.Also once you add a midpipe it will help!!

later on ill add an ex-pipe with high flow cats probably next month, but i just have to break them in and theyll get louder? lol

Yea it takes a few days sometimes.Drive around a little bit and stop at a car wash and spray a little water up in it.not to much just a little spray will do it.

It's called "burning them out", it'll get louder.

ive got flowmaster catback on my gt, but ive also have a BBK "catted :loser: so i can pass inspection" and it sounds really nice. my vid is in my sig

the mid pipe will make it louder.

i know the o/r x woke my flowmasters up AAAAALLLLLOOOOOOTTTTTTT so id imagine a catted would also make for a considerable amount of difference

o yes it does :punk: