For the 5AT drivers .. have you tried brake boost?
is it when you hold down the brake while stepping on the gas?
if so dos'nt that mess up your car? how much are you suppose to rev the engine?

 

Definitely not good for your car and rarely worth doing.

 

This is called "loading the converter", "power braking", and a lot of other names. It is very common to do with AT cars, and often results in better acceleration from a stop than does launching at idle. It is akin to dropping the clutch on a MT car - same advantages/disadvantages.

Does it damage the car? Not if done in moderation - this really is a race-only technique since it breaks the tires loose. Depending on the car you may want to stall the converter at 1500-2000 rpm; using full throttle or part throttle depends on the car/tire combo. Usually the 'best' technique is to stall the converter at the desired rpm ( depends on the converter ) with part throttle, then release the brake and "roll" into full throttle. Depending on the traction you get you may need to take a full second to reach full throttle.

Some car/tire combos need to leave the line at idle, but most FWD cars can use a bit of rpm to help the launch...which is what loading the converter does. Load it too much and all you'll do is spin the tires.