Great item. Love the sound, gets louder when you step on the pedal but not obnoxious and when you're not riding hard the muffler is pretty quiet. It's not quiet, but that's the point of buying a Flowmaster to hear your engine breathe. Produces a nice deep tone and rumble. For those who like loud sound all the time, you might want to consider the Original 40. No hum while driving, which is nice.