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Old 01-03-2011, 06:07 PM   #4 (permalink)
UFO
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Join Date: Sep 2010
Location: Denver, CO
Posts: 1,300

Colorado - '17 Chevrolet Colorado 4x4 LT
90 day: 23.07 mpg (US)
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That's EGR for you. I cleaned my manifold once two years ago, I'm going to check it again this spring. If it's plugged up again, EGR=byebye.
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