To use it at least how I do in my car: pre stage in 2nd gear then bump into the stage beam until it's flicks or just lights up then I pull selector into first then release foot brake and let the car roll the rest of the way into the stage beam, go full throttle on the launch 2 step until my desired boost is reached then push or smack the shift selector into 2nd gear to release the brake and launch! I then shift into 3rd quickly so the 2-3 shift is auto.