It builds up about 10 to 12 pounds of boost as you hold it on throttle. The shift light is needed to make adjustments for the launch rpm. It has buttons on it for the adjustment. Both goes as a pair. YOu can have the shift light without the launch control module but not the other way round.

 

how install gizzmo launch control to wires ecu in my evo viii , i need color ecu to launch interfase help pleace

 

What?