I fully agree with Mark. I've run slowmasters, among others, none compare to Aerochambers. The sound is just right. Loud when you get on it and just a nice rumble when driving along. I like the part of no interior resonance. With Flowmasters, you can't hear the radio, even at idle. I want the sound outside, not in the cab. Flowmasters are way, way, over rated. I for sure won't waste my money on any more of the POS tin cans.
