Leave the exhaust alone.. Have someone drive your car by you at speed, and revel at how good it sounds. You think it's quiet because the resonator makes the cabin quiet. Why are people telling you "take it out, and when the noise gets to you, put it back in"? Because it gets annoying. That's just dumb, and a waste of money to boot. If you want some more sound, get the KKM, that provides a nice little sound when you get on it

Definitely do a search on this topic, as you'll see it's been beaten to death.