BOV Plumbing
#1
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BOV Plumbing
Hi all, i have a greddy kit running 5psi at the TB. it has a ebay knock off BOV, i think its designed after the greddy also. there are 2 vacuum nipples on it one was hooked up when i bought the car and the other was open. what is it supposed to be hooked to. diagrams are awesome if you know of any.
#5
The one in the top (the purple part) needs to be plumbed someplace in the intake manifold AFTER the throttle body (so it sees vacuum when you close the throttle). The other one can either be left open to atmosphere, or plumbed somewhere in your intercooler piping BEFORE the throttle body (so it will only ever see boost or very very little vacuum when you're off the throttle).
It allows the valve to act more quickly.
It allows the valve to act more quickly.
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