When I first bought my M4 slipon, I didn't really like how loud it was, maybe it is because I got so used to the 100 pound stock exhaust. Quite of few other people on here think it's too loud to. it had an annoying drone at cruising speed, especially without earplugs. I put in the Q4 Stage 2 baffle, it was 50 bucks. There is A noticeable decrease in overall loudness especially at cruising speed. With ear plugs, and the stage 2 baffle, the exhaust imo has that perfect sounding tone, not too quiet, and just loud enough to be heard but not annoying anymore. As a matter of fact with earplugs in cruising at 50 mph or more you can barely hear it. I'm sure some of you will agree.