hi I need some help I cant get my duel port bov to sound how its ment to I think ahah its currently set to plumb back but when I drive its bov surging and making the flutter sound but I cant get it to make the straight (pssssshh) sound its already got two washers in and is tightined up and turned back a little? can any one help me in what I need to do? aslo its just a stock fg ,auto