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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
Mark, higher system pressure should cause it to run richer, higher control pressure would cause it to be lean. At least that's my understanding? Always learning though so happy to be told that's wrong
Hey Jonathan, far from me to profess to be an expert! My logic was that if system pressures increased, then control pressures would increase proportionally....thus a leaner mixture. But hey, I could be wrong. Maybe system pressure has no impact on the WUR's ability to regulate control pressures, and just causes more fuel to flow (volume) to the injectors - resulting in a richer mixture as you've suggested. I now defer to public opinion on the intricacies of CIS.

Thanks for the feedback, always learning, aren't we?
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 05-28-2010, 06:25 PM
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