After 2000 miles my exhaust is about half as loud as it was when i first put it on. A bit less bass. I kinda liked the noise since there was sound but no drone.
As long as it doesnt sound like an import with a coffee can fart pipe.....
ESS Tuning m60 version software
m60 intake manifold
3" obx catback
full powerflex urethane setup
m5 rear sway bar
M5 chassis rods
M5 3.15 lsd
Bc-r coilovers w/ swift springs
ss braided brake lines