Launch control creates boost at a stand still at a set rpm;
Taken from MSD's website:


"Simply flick a switch and your L8 launch control or P8 Launch Control is active, all you have to do now is bury the pedal to the carpet and you will see, and hear your turbocharger come onto boost and your rev limiter activate at around 3750 rpm. Lift the clutch, disengage launch control and your away, your normal rev limiter is resumed and you are off down the road at maximum speed!
The boost depends on the spec of the engine but will likely be between 10 and 35psi whilst active."

Rich