baldur

As far as I know that car has no dump valve. It has an electronically controlled valve that dumps air directly into the exhaust manifold for the anti lag. That sound is just compressor chatter.

Tough-guy

Never heard of air injection into the exhuast. The only systems I've seen in real 3 used spark interrupt to get fuel to collect in the pipe then retarded timing to ignite it(Causing that oh so familiar pop and blue flame out of the tailpipe) upon downshifting to keep the turbo spinning into the corners. But what do I know I just worked on midgets and micro-midgets? :1

mike94se

AKA the anti-lag(US)/misfire(Japs)/bang-bang(Europe; are they this retarded?)