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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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Originally Posted by e170drvr View Post
I think charge pressure refers to the .5 bar pressure applied at the wur for testing. Just a guess.
I believe that is the correct answer. "Charge pressure" is the result on the control pressure when the WUR sees air pressure indicative of a boost situation. This is confirm that you are getting proper enrichening when boost is present.

The only way to test it would be to hook up an external regulated source of air pressure to the WUR (you'll find a small vacuum/pressure hose connected to the lower left hand side of the WUR). You would have to pop that hose off and connect an external source to it...then pressurize and see the impact on control pressures.

I think that's correct....somebody tell me I'm wrong, I'm all ears.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 08-01-2011, 07:07 PM
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