Forge MBC

98gstaherns · 06-05-2006

Just wondering how do i hook up a forge MBC. Because the one i got now only has to plug in spots and this one has 3 ports.

**Halon** · 06-06-2006

I have a Forge MBC. There were only 2 spots to hook up vacuum lines, so I don't understand what you're talking about. pics?

98gstaherns · 06-06-2006

This one

Shane55113 · 06-07-2006

cap one of those side ones off and the inlet is the side opposite the dial, and the other spout goes to the wastegate. I got bored so i modified SBR's cheat sheet for ya.

98gstaherns · 06-07-2006

Yea Thats what i was thinking of doing. Didn't know if it would be right or not.

Shane55113 · 06-07-2006

you must of got one of the 3si ones.

98gstaherns · 06-07-2006

Does it matter if i plug the WG hose on the side or the bottom?

**Halon** · 06-07-2006

Yes it matters. The pressure source must be connected to the bottom nipple. And the wastegate must be connected to one of the side nipples. Man I love the word nipples!

98gstaherns · 06-07-2006

Thank you! So is the hose that runs from the BOV line is that the pressure line? Or the one that runs from the WG?

Shane55113 · 06-08-2006

yeah pressure comes from the intake manifold when the throttle plate is restricted it "pulls" the bov open and opens the wg via boost controller.
""= short explanation.

98gstaherns · 06-11-2006

Well i put it in and turned it all the way down but in 2nd gear when i hit the gas it goes up to like 20 psi?