ok so I don't know if any of you had this problem or not, but at higher boost when the valve would open I would get the woosh of the plate followed by the sound of it coming through the intake. it was almost like 2 bov's I took off the plate and couldn't figure how it was happening other than the holes being too small and the excess pressure pushing past the o rings.. any way I decided to open up the holes.. I went to 3/8. and needless to say this cured the problem and made the bov louder slightly. very easy to do just drill the holes out and make sure there isn't any metal left behind..