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MPG, yea I know, another one.
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11-22-2009, 09:47 PM
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[ion] C2
636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,913
The oxygen sensor behind the catalytic converter solely monitors emissions. Nothing else.
The oxygen sensor closest to the engine is what controls closed loop fueling.
[ion] C2
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