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Thread: 2011 duramax?
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Old November 6th, 2011, 08:29 AM   #4
hoo dat. wat.
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Join Date: 11-09-05
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Closest I can give you is 2011 preproduction numbers I saw when testing two years ago, and they're to be taken with a grain of salt, lol.

Running unloaded from here to Death Valley in an unloaded CCLB 4x4, I averaged 18 mpg while running between 65 and 80-ish mph. During that time, I was writing and testing control code for the "hydrocarbon injector" in the aftertreatment system. It is basically a single fuel injector that sprays fuel upstream of the DOC to create heat in the exhaust to burn off particulates. Without that running all the time, I would've been closer to 20 mpg.

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