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Old 06-05-2013, 12:47 PM
chicken74701 chicken74701 is offline
LawnSite Member
 
Join Date: Oct 2009
Location: Durant, OK
Posts: 34
I have an 03 Duramax with 4" turbo back exhaust, Banks cold air intake, and Edge Juice with Attitude programmer. Got 24.1mpg. Once. Unloaded. That's a crew cab 4x4. Normally I average about 17, which I am very happy with. 25 pulling a trailer is hard to believe.
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