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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,274
Where did you get this different yellow relay that has this function?

And yeah, a new overboost sensor doesn't shut off the fuel pumps until somewhere around 1.3 bar
I don't think anyone runs nearly that high a boost with street gas so it will probably only shut down the fuel pumps and throw you into seat belts if the wastegate hose or diaphram takes a crap.

I replaced that overboost sensor with a new one from pelican, (about $60) because the one on my car would shut things down at .95bar sometimes, and then it would take a few minutes to reset itself let you start the car.
I think the diaphram inside it was dried out and stiff and the spring it pushes against was fatigued and softened from age.

I've since heard you can buy an adjustable hobbs switch that will screw in the same for about half what the origonal sensor cost..
Old 12-02-2009, 12:21 PM
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