i cant hook this perrin occ up to the pcv valve side because when i hook the throttle body intake up to the occ it sucks the whole can right in. i dont think that the silicone that they made it out of is strong enough. the occ isnt clogged up or anything because i blew through it pretty easily. maybe i should sell this one on ebay and buy on made out of aluminum or heavier to take the pressure.