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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,883
Check the intercooler and turbo air pipe o'rings and any other rubber couplers for the turbo air. If you've got a bad air leak as a result of a bad seal, all sorts of funny stuff happens. It will mess with your vacuum, and it will mess with your mixture AFR's.

In my earlier learning days (preliminary, as the learning process never stops and I always find that I know a crap load less than I think), I "over-boosted" once and got to experience that freightening emergency fuel pump shutdown (thought I blew the motor up). Afterwards, it ran like crap...because all that boost and jarring the engine around dislodged an o'ring. The car would not idle without my foot on the gas, would not boost above maybe .4bar (duh!)...stuff like that.

If your fuel control pressures are all ok, then it shouldn't be WUR related.
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 03-08-2009, 06:34 PM
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