PARDON!After 40 years in motorsport, I am surprised you have any hearing left whatsoever! I am from the other viewpoint after many loud road and race bikes, I think the most complained about was an RSV R Factory with twin Akrapovic exhausts, boy that was LOUD!
I do check what is nearby before starting up the cars as have been a few scared passerbys from the sound of a big V8 starting up!