Originally Posted by Guitarman97
So i have a 2003 Mustang GT with Borla exhaust and I absolutely love the sound of it, but it's not quiet loud enough for me. I know there are always offroad H/X pipes but i'd prefer something that would pass inspection that way i don't have to take it off every year.Also would High flow cats increase volume? so please give me your suggestions and please don't say change the muffler because that's not an option. Thanks appreciate it!!!!
I was a bit confused at first...