but its kinda like overboost... the map sensor reads that the car is overboost, and cuts the power... its an automatic thing... just like the knock sensor detecting knock and pulling timing...
sorry, im just used to having an audi, we had a program made my Ross-Tech, called vag-com, that could tell us how much timing was being pulled on each cylinder, and how much timing was being advanced to begin with... among many other things