<$.25 adjustable boost controller, cheap & easy!!

[dbtk2]

I have been looking at one of my modified boost controllers for my STE lately trying to figure out how to make it put out exactly the boost I want, and noticed very quickly that what I was trying to do was very simple.  I drilled a hole in the front of the boost controller that cuts into the passage for the wastegate vacuum.  If you leave this hole open to the atmosphere the vacuum will leak out and the wastegate won't open much and you will get lots of boost.  However I found that if you put a screw in the hole and turn it in so it blocks the passage it will do the same thing.  Then if you turn the screw out it will allow more vacuum to go through, lowering the boost.  So basically you can drill a hole in your stock boost controller that is on the car, put a screw in this hole, and turn the screw in and out to adjust boost.  It isn't the safest thing in the world, but if you want adjustable boost, thats the way to do it.  And if you already have the screw...its free, if not, it costs you a whole 25 cents or less.  

This will also allow your turbo to spool quicker off the line because when the computer tries to open the wastegate for the turbo lag that programmed into the ECM the vacuum restriction isn't going to allow the wastegate to open as much.  

DISCLAIMER:  I am not at all responsible for someone using this mod ignorantly and causing drivetrain damage.

Shawn

EDIT:  Changed disclaimer due to god910's post.

[god910]

DISCLAIMER: I am not at all responsible for someone using this mod ignorantly and causing engine damage.

Don't worry about your engine, worry about your tranny.   :wink:

[dbtk2]

DISCLAIMER: I am not at all responsible for someone using this mod ignorantly and causing engine damage.

Don't worry about your engine, worry about your tranny.   :wink:

It can damage the engine just as easily as the tranny if you are an idiot with it though.  Although, it will screw up the tranny pretty fast.  When I put this boost controller on with the screw turned all the way for no wastegate and stomped on the gas at 30mph, my tires went up in smoke for about 1 second until the computer decided 16psi boost was bad  :oops: .

Shawn

[RedZMonte]

you can also use vaccume "T's" to do the same thing. you can get different sized outlets to kind of bleed off different levels of vacuum.

RedZ

[god910]

So am I the only person w/ a TG160 that the fuel cut doesn't work?