Loud pipes save lives
No they don’t.
I was putting home along Yamate-Dori, and some idiot was blasting along on his bike with Carefully-Removed Mufflers. I’m sure that his Loud Pipes saved his life, but it was only due to paranoid shoulder-checking on my part that I narrowly avoided (at the last moment!) slamming into some guy on a perfectly-innocent little 50cc scooter that I would normally have been able to hear easily.
Unfortunately, Mr Loud Pipes had a bike that was blasting away with sufficient amplitude that he successfully drowned out all of the other bikes in his immediate vicinity.
Smooth move, Ex-Lax.