way to bring up a post thats a year old.
i can say, when i passed pits i stuck a rock between the vacum line to my hks bov stopped making noise and worked a treat to pass pits, and i didnt notice any difference apart from gay squeekyness gone.
also my mate dropped 10g's at C-RED gt3540, 6boost mani, 800cc, haltech, etc etc on his r32 rb25 and they told him not to run a bov.. tho he is running a nice big plummed back gate.
.. 400awhp (has the smaller gt3540 rear housing)