I was out messing with the car today. I happened to put my hand over the bov and was blipping the throttle. It seemed to be sucking a small amount of air in through the vented 1g BOV. I covered it with my hand to feel the vacume. It didn't seem to be leaking air under a boost test.

This can't be right, I wouldn't think you'd want to be sucking unfilter air into the engine?

How do you test a BOV?

If you've got some sort of machine that makes vaccum, then you can test it. Problem is, there's not a whole lot of test platforms out there to hook a small vaccum hose up to and test it with. Leaking at idle is common for the stock BOV as it's under a small amount of vaccum then. Once the throttle is increased and positive manifold pressure is achieved, it shouldn't leak until you let off.

If you weren't venting to the atmosphere, the air would be filtered...

Exactly what I was thinking but was to lazy to reply with. Crush it until it doesn't leak at idle, but not so much that it won't blow off.

Agreed. Be very very careful though. It doesn't take much to increase spring pressure. I made the mistake of hitting mine with a hammer the first time. If I was doing it again, I'd probably use a C-clamp and progressively tighten it down until it didn't leak.

Are we hating on the vented BOV???

Anyway, thanks for the suggestions on fixing it. I do have a Turbo XS RFL in the garage, but I figured that would be too loud and would cause me to get more grief than the stock vented BOV!

Well car will now only hold 13 psi of boost...went to TURBO XS BOV, see that thread.