Best I've done 4.4 (vbox) and this was w/o launch control; easing the throttle until clutch engaged (to avoid damaging the clutch). Limiting factor: traction/tires. No grip at all with launch control. With better tires I can probably do it (sub 4).
2014 E63 AMG-S
2012 C63 AMG (P31) - gone
2011 E90 M3 FBO - gone
Last edited by GIdriver; 04-04-2013 at 08:39 PM.