[john]

A pinch in a vaccum line or a small hole will have the same effect. Pull off your intake and take a look at the nipple coming off the wastegate actuator. I have seen a lot of times that a 3" intake will rub and pinch the line. Over time, it can also give you a little hole. Boost will be uncontrollable. Look that over. The ghetto intakes do that all the time and yours may also.