Ok, last week I was pressure testing my pipes and I get a leak out of my boost port on the SFMU, is this suppost to be blocked off or what.

It should be closed. There should be an adjustment screw inside the hole there, and it needs to be all the way in. If you don't find that there is a screw in there, the plug the port off with the proper sized screw/bolt ect. The boost port is used to limit the fuel pressure rise to a maximium value at a certain boost pressure. For example, if your fuel pressure at 10 psi boost is 80 psi, then running 12 psi boost will make you run the same 80 psi fuel pressure. On our setups, this is bad, and this port does not need to bleed off any boost pressure, which means it needs to be all the way closed. There should be a small plastic ball and spring behind this adjustment screw, and in the middle of the screw is a tiny hole. Once a certain pressure is reached in the SFMU, it pushes on the ball, and bleeds off internal pressure from teh SFMU chamber. Just tighten that screw down, but dont over do it

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)

Thank you for responding. Appreciate your responce..along with your information on why it needs to be shut.