I just found out that the thing is adjustable!!!! Go figure.. hahah I guess you have to turn the screw in the back in if it starts leaking at idle or unscrew it a little if it doesn't blow off early enough. And you have a choice of a gold or a purple valve insert that has to do with the type of pressure you're running. I don't know the difference between the two.. but I have the purple one.. and it works fine. Well alrighty then!!!