i been lauching at ~2k RPM once you get past that the rear tires start to spin, brakes will hold car in place still. Just the AWD system will direct all power to rear wheels...Then 50% of power is immediaty put back up front when brake is released.
its kinda cool to see an AWD car spining wheels at the line but not moving LOL (the spin is not fast enough to produce smoke, just the weaker rear brakes not holding)
Next time ill just let the rears slow spin in place and get above ~2k RPM and see what happens. ill make sure i get it on video too... wait i do have it on video in my old G35x...
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http://www.youtube.com/watch?v=vPMKaCteZu8[/youtube]