[Mustang_GT_90]

I don't run turn down's (dumps) either. It sounds great but yeah it's very loud. I run BBK Full Length Shorties, MAC Pro Chamber, and 2 1/2" pipe going into 2 1/2" flows. I had tail pipes on it until around a month ago then I got tired of having "The Stealth Car" and pulled out the reciprocating saw and hacked them off.
If you really want it to sound mean you should check out cutting the exits completely out, put about a 4 inch hole in the back of them. It sounds great belive it or not but yeah it's even louder. It's like just a low bass rumble with no back pressure.