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Old 12-01-2011, 05:24 PM   #25 (permalink)
UFO
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Join Date: Sep 2010
Location: Denver, CO
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Colorado - '17 Chevrolet Colorado 4x4 LT
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Jason is correct, there is no O2 sensor. There may be a MAF output dependence on either the engine load or operating temperature, or both. Since the EGR is not modulated with a throttle, I believe the window the ECM expects is wide enough to neglect those effects, if I adjust the appropriate base amount.
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