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Discussion Starter #1
is any one else getting 28 mpg with their cummins
 

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HaHa yeah right, are you serious? is that hand calculated and what year do you have?
 

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i wish....:hyper: you better hand calculate that. i m averaging 17-18.:thumbsup
 

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yea guys reading this you should also check out his thread on "99cummins Vs 08 cummins"
 

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Discussion Starter #5
it is a 1999 2500, 2x4, 4 inch turbo-back straight pipe, afe stage2 intake, 3:55 gears, and a 5 speed maual.
 

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Discussion Starter #7
no, ohh and a holley blue pump
 

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ya did you turn the truck off at the top of the hill or let it idle down?
 

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Discussion Starter #11
186,000 miles
 

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Discussion Starter #14
4x4 cut down on mileage.
 

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Not to start a pissing match or anything but we all know 28 mpg is kinda far out there, so why bash on the guy about rolling it downhill? C'mon now. I've squeezed 25.52 mpg out of mine going 75 with the AC on. Granted, that was only calculated on half a tank.
 

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Discussion Starter #16
that was driving from greenville to watson, not one tank but about 1 and 1/2-3/4
 

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Discussion Starter #17
not to get off subject but any of yall have an 2008 duramax.
 

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Dey took er jerbs!
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not to get off subject but any of yall have an 2008duramax.
My buddy does. Its all stock and is getting 15-16 avg mpg.:lol3:

Its not A LOT worse than some are getting with a Cummins, but at nearly $5.00 a gallon, that adds up!
 

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After adding the few mods I have a few weekends ago, I was able to bump up my mileage quite a bit. Added 3 mpg city, almost 6 mpg highway. This past weekend I was averaging 23 mpg highway (hand calculated), and am quite happy with that number.
 
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