Coz it does mad skids? I once accidentally put a VT Berlina into reverse while driving at 80km/h. The noises were horrible, you'd think it shouldn't happen but knowing holden, the feature that prevented it had probably already failed

On the topic of the whistles, I've noticed (probably post stage 1) from 3000 to just before 4000 there is a pronounced whistle, doesn't sound like normal turbo/induction noises, actually sounds like a referees whistle hehe.