There's a sounds section in the vehicle script for the jeep and stuff with //ed out settings. I tried to make them work but no use so :D.
Anyway, wouldn't it be just a tiny bit annoying for dogfights...
Red player: <Teamchat> Stealth Mission time
*Goes to blue base*
Blue player: Oh look, a red guy we can't see but can hear, get out the miniguns!
*Red dies*
