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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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Quote:
Originally Posted by jwasbury View Post
Mark,

In my own testing, I found that the WUR responds only to boost pressure by lowering control pressure. It does not raise control pressure under vacuum. I believe others here (Alan L comes to mind) have had the same result.
Thanks. I was just operating on logic only - assuming the internal diaphram would move in both directions respective to boost or vacuum. To test it, I sensuously applied my lips to the hose barb, gently blowing and sucking like a street walker, and could hear the diaphram moving in both directions.
I'll just add this little tidbit to my memory banks.
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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.

Last edited by mark houghton; 03-05-2009 at 07:17 AM..
Old 03-05-2009, 07:04 AM
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