I'm picking up a MAC catted H pipe today to put on my car, I already have the MAC catback exhaust, will this really wake my cars sound up or what? I'm just wondering to expect it to be totally different or not much. Also I take it I won't really feel much anything powerwise from just an H pipe, correct?
thanks

 

power... a bit

it'll sound like a totally different car.

 

It won't be too loud if that's what you worried about. And you'll probably notice a little better pull.