Vac line location
So I'm just Doing the few finishing things on my engine swap from a 3.8 to the 4.6 and I have an extra Vac line. It goes from the little round thing on the back drivers side fuel rail all the way around and hooks up to the throttle body then keeps going to the passenger side of the engine. The end of the line is what I can't figure out where to put. Any help would be awesome!!!
---------- Post added at 09:39 PM ---------- Previous post was at 09:38 PM ----------
Ok the round thing is a fuel pressure regulator!