Hey guys, I just bought an 05 9-3 arc. It is a stage 3 mps tune. The exhaust is a 3" downpipe(required), into a 2.5" exhaust with a magnaflow cat, and then 2.5" out the back. So basically it's a muffler and resonator delete. It's a bit loud, if I were to have a muffler installed, would it time down the sound a bit?