I have a sebring exhaust and it makes a 'different' kind of sound. Most exhausts i hear have a smooth humm....(is that only from ricers?) others i hear a rumble (like those from euro sedans w/modified exhaust), but mine sounds like its rolling? I don't know how to describe it, but that's the best i can. When i'm idling the xhaust sounds like its rolling, first, i thought i needed my exhaust replaced but it was fine. Then the other day a scirocco past me and it sounded similar to my car. I guess it's a vw thing?