im having trouble to install my manual boost controller on my 89' Turbo II.
would take all suggestions and help.
thank you

 

run a vacuum line from the wastegate to the controller, then run the other line to the nipple on the turbo. Look at the directions on the boost controller to see what line goes where.

 

OEM turbo?
Brass manual boost controller?

Like this..............

red nipple to red nipple


like this.....


P.S. Make sure that if you ever "accidentally" unscrew that adjustment screw all of the way that the ball bearing is down in the hole directly across from the screw before installing the spring back in there, if it falls to the other side it will not work correctly.

 

There should be instructions to tell you which end goes where.

 

If factorym the S5 has a bleed off hose that attaches to the boost solenoid. Remove that hose, then remove the other 2 hoses on the ends of the T and remove all. Install run 1 hose from the Turbo to the MBC and another hose from the MBC to the wastegate diaphram.