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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 JBL930 View Post
It does look like the WUR would react to vacuum though doesn't it. Has anyone actually had a gauge on there and added vacuum to it and checked? I would have thought it would raise control pressure with vacuum just as it lowers it with boost. I know this has been discussed but it would be nice to have an answer from someone who has actually done this exact test

It should be simple enough to find out. Maybe I'll check it when I test all other control pressures. Just pull a vacuum on the port and see if we get an increase in control pressure as theorized.
BTW, I should soon have in my hands a Leaskified WUR...with the stronger diaphram (just some added assurance against future failure).
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 03-05-2009, 09:03 AM
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