Maybe its just my headphones or I haven't driven my car in too long but it sounds a *tad* louder than I remember mine...or any other bonneville for that matter. Granted the only time I've ever heard mine fly by me was about 1.5yrs ago when I let my wife drive it. haha. She had fun with it so I let her use the nitrous once. She was freaking out which was freaking me out...never again haha.