runing vaccum line for boost gauge

[gtb bb]

hey dose any one no were im ment to run the vaccum line to for a boost gauge on a gtb 1999? thanks :lol:

posting in the DIY threads isn't a way to find out...

[jey]

Topic moved.

I ran mine straight into an unused vaccuum fitting on the intake manifold. You can T-into one if you don't have any unused fittings.

[anothernord]

I've found that the fittings near the throttle body do not pull vacuum at idle, only under load. Fine for turbos, but for a Supercharger that produces boost at idle (if the clutch is on) the bypass valve has to be open, so I have the line T'd to the fitting on the back side of the manifold on the passenger side.

[rougeben83]

easiest, most direct place to Tee is usually the vac line on the bypass valve...

[darkness of death]

as mentioned, the line to the BPV

[anothernord]

Whoops, was thinking in terms of bypass valve locations. Yes I agree the boost gauge would go with the BPV hose, but as a reference to where the initial vacuum source, I used the fitting on the backside of the manifold, because for some reason the lines near the throttle body are vented before the throttle body plate, so when the throttle is closed the reading flatlines.

[subba]

Look for Hose 11 on your solenoid box. you can tap into it for the Boost pres.

If #10 goes from your solenoid box, unto a alumunum line on the Intake manifold over to the other side of the car to a actuator in the left fender, #11 is the hose you want to tap into, rare cases the numbers are different.