I bought a knock of GReedy type-s bov and it didn't come with any instructions. I searched on yahoo and found a few sites that have info on it. According to what I read the top nipple connects to a vacuum line that is always in vacuum at idle, while the lower nipple should get connected to a charge pipe or something else that is always at postive pressure. If this is true do I really need to connect the bottom nipple or can I just leave it open (Not connected to anything)??

Just like you said, top to a vacuum source like the intake manifold and the bottom is for boost only or you can leave it unhooked and it will be fine.


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