I had the need to drop one side of the back seat to carry something long in the trunk. As I was driving around I noticed the car sounded a bit louder from the exhaust and thought the mufflers might be opening up with some miles on the car. Then I realized it was the seat being down that made the exhaust sound louder. I just got back from a 50 mile drive with both seats down and the exhaust note is noticeably louder. I imagine it's closer in exhaust note to the R with the resonators deleted. Give it a try. ;D