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Old 06-15-2009, 04:47 PM   #2
Big Evil
 
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Name: Big Evil
Title: Moderator
Status: Offline
Join Date: Nov 2008
Location: Tempe, Az
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Your Ride: 1994 BMW 525i, 1987 325is, 1986 325
You have a restriction in the air intake, or a faulty sensor on the front side of the engine (ECT, Ambient, IAT, etc.) or a vacuum/air leak. It's most likely actually causing a lean condition and the old stuff as well as the new stuff was/is reading right.
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Big Evil, The BMW driving monster of the American Southwest (Currently on BMW #5)
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