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Old 03-13-2013, 11:44 AM   #13 (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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Quote:
Originally Posted by wdb View Post
All the turbocharger does is increase the amount of air entering the combustion chamber. Either the computer, by keeping the injector open longer, or some other mechanism, adds fuel to match the extra air. Stopping the additional fuel altogether, with no other compensating changes, could cause you to run dangerously lean.
That is wrong. Diesels ALWAYS run lean - because diesel fuel is designed to be ignited by the heat of compression and burns slowly regardless of fuel/air mixtures, this allows them to burn fuel completely and with greater expansion, resulting in better fuel efficiency.
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