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02 sensor needed?

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Old 03-18-2008, 11:34 PM
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Cory9584
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Default 02 sensor needed?

I heard with aftermarket chips the 02 sensor insnt used, is that true?
Old 03-19-2008, 12:53 AM
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zoltan944
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that would not be true at all. They change fuel and timing maps in the car that only kick in during certain throttle positions. Im not sure how rich you would run but definantly more rich at idle and worse overall MPG



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