91GTFox111

I have a 91 Gt .. Pretty much completly stock becides a BBk Off Road H-pipe and 3 chamber flowmasters that has a leak ... I am lookign for cat back exaust but i cant decide on what to get .... The 3 chamber are a little on the quite side im looking for a louder and deaper sound .. Anyone have any sugestions ? ...

RUSH2112

I am in a similar situation as you. I have a stock exhaust system and will be replacing everything from the manifolds to the tips. Here is what I am getting, and what I recommend (some things you may not need):

BBK Long Tube 1 5/8 Ceramic Headers
BBK High Flow H-Pipe (with catalytic converters)
Flowmaster American Thunder cat back system (with stainless tips)

Dbeck002

i think you should get a straight through design. kind of like the super turbos or magnaflows. straight through means there are no chambers in the muffler and that the gases just make a couple turns before exiting the muffler. for some reason i like the sound of dynomax and magnaflows more than flowmasters. i would get super turbos

angcobra

Flowmaster sounds great on most vehicles, I have them on my 4x4 truck. Recently I have seen many postings that have shown Flowmaster reduce HP as shown on the dyno. I only mention if you are looking for HP and sound.

90Mustangfan

Flows dont loose HP, they gain. I hace seen a test on a 04 GT and they just put flowmaster 40's 2chamber muffler on a bone stock car and got 14.6 hp, and 13.2 TQ.

nemethjames1

.............. flows provide like 5 less hp then magnaflows.... true true....... and 91gt, i'd throw out those stock headers ASAP..... keep the h pipe u got and get you some 2 chamber flows