99texasGT

My friend has a 98 GT, I have a 99. He got flowmaster 40's about a month ago. I got mine just two days ago. My car is so much more aggressive and louder than his. Why is that? Because I have more HP or just the different year/motor set up? I’m very happy with the results, he's not so much.....HAHA

96meangreengt

Do both both of you have the same mid pipe, I would guess that yours is a o/r-mid pipe and he still has cats.

ctgreddy

agree with above, do you still have all your cats? only other thing i can think of is the improved cams of the PI that might make it sound a little different, shouldn't be very much tho.

stevednmc

I think the way the heads flow would make a difference. Also depends on the rest of the exhaust setup.

MCxQubed

Vid of your setup?

99texasGT

No we both still have stock mid pipes. Im in the market for an off road x. im guessing its the heads?

96meangreengt

I believe the 94-96 have 6 cats also instead of 4 that you have, that would make a difference too.

99texasGT

Oh okay, that makes sense. Thanks man.