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Old 10-12-2015, 01:41 PM   #2 (permalink)
UFO
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Colorado - '17 Chevrolet Colorado 4x4 LT
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If you accelerate too quickly the fuel mixture will be enriched to prevent detonation, either by the carburetor acceleration pump or by the ECU operating off its load map. When the mixture drops to 14.7:1 or lower, the engine efficiency drops.
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I'm not coasting, I'm shifting slowly.
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