noobie question ... anyone know if the sound these make is adjustable? The one on my engine currently makes that fluttery sound instead of a straight expulsion:
(Eg: "psssh-ssh-sh-sh" vs "psshhhh" )
If anyone knows how to adjust it, please let me know! I'm guessing it something to do with the screw / bolt on the top of the BOV, as there are no other moving parts on it? (see pic - screw is circled in red):
Cheers