What exhaust is the loudest on a 2001 mustang gt?

Answer:
GrannyMaster's Super 80 series has a nice hum.

The best exhaust that i know of that is H-pipe. I have it on my 2000 gt. It is seriously loud. My friend has a 5.0L mustang cobras with straight pipe and it's not even close to as loud as the H-pipe on my 4.6L gt. Roush has a kit, which is what i have, but that'll cost a $1000 for the PARTS ONLY. I would highly recommend this kit, even on a stock gt it sounds absolutely amazing.

First answer by ID1197974973. Last edit by Elfster89. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 6 [recommend question].