An uncorked rotary is a beautiful thing to hear. From a distance. With ear plugs. Rotaries are inherently raspy at full throttle and partial throttle. The kind of raspy that makes your brain bleed as if it was being sandblasted. As one owner put it: "It's like attacking a tin shed with a chain saw, from inside the shed." Rotaries also have a much different pitch of exhaust note than piston engines. It's higher, more piercing. Rotaries are also much much louder. This is a side effect of how much energy (heat) we have getting dumped into our exhaust. The 787B 4 rotor being tested and measured for inclusion into Forza 4 was described as being "the loudest thing ever heard" by the sound guys. So loud that they had to use special equipment buffered and layered multiple times to try to dampen down the volume to prevent severe distortion. A 2-rotor isn't quite that loud, but it's certainly loud enough to cause physical pain. Perhaps you don't care, but the local cops, friends, family, and other enthusiasts will NOT share your opinion and cause you much trouble.