Originally Posted by DaveB

If you launch like that, you'll get slow 60 foots. My launch technique is:

Foot on brake
Foot on gas to the floor
Release brake about one second later or so

This usually nets low to mid 2.1 60 foots. Launching off idle nets me mid 2.3s.

Originally Posted by DaveB

Won't hurt anything unless you sit there for an extended period of time (5 seconds plus). The same gas/brake procedure is listed in the G35 FSM as a way to test the stall speed of the torque converter. The FSM specifically says not to brake stall for any longer than 4 or 5 seconds or you can overheat the tranny fluid.

I would not recommend brake stalling on a regular basis just because it is more abusive in general. It's only needed in those situations when you're racing from a dead stop.