The hose that goes from the waste gate avator to (the snail of the turbo or the cross over pipe)you need to blead air from that hose or put a t piece in and run the hose in the car so you have ajustible boost you will have to put a tap on the end of the hose do you have a boost gage running of yor manifold if not it will go boom from too much my web add is datsun1200post @hotmail.com