Third outlet from Greddy Type-S

Where do I tap into for the third hose that connects to the BOV? Not the one to the intake or the one that goes to the throttle body. I have the hose and the V but don't know the spot. Thanks.

Leave it vented.

That is the fast release port, usually plumbed to a pre TB boost source, like an IC pipe or compressor housing nipple. Most people with the greddys dont use them though unless they cant get the BOV "soft" enough.