There is a picture in post #8 of my boost pressure sensor after I pulled it from my intake manifold.

http://www.peachparts.com/shopforum/showthread.php?t=170098&highlight=pressure

There is no way it was working.

That does not change the fact that you are overboosting in the first place, but maybe it will help you fix the overboost protection circuit.

-Jim

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1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.