yah with the SLP exhaust, with the cam it was more of just a loud sound, then a defined deep tone like with the stock muffler. In person with the stock muffler when your right behind the car you can hear it thumping pretty damn loud…and when Im driving, it has a very “deep” thumping tone where as before with the other exhaust it was just all raspy noise. The only thing that sounds better with the SLP exhaust over the stock muffler is idle.