5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

bad fuel mileage

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Old 06-24-2014, 09:23 PM
hulse09's Avatar
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Default bad fuel mileage

so i have and 06 cummins. only has a cold air intake with afe intake manifold and 5in exhaust. im running a H&S mini maxx but all i can get it about 14.5 - 16mpg i would think i could get 18-20
 
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Old 06-24-2014, 09:31 PM
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Smarty!
 
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Old 06-25-2014, 09:50 AM
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Manual or auto? What gears do you have? 4wd or 2wd? If you have a 4wd, Auto, and 4.10 gears, then your pretty much in the money for mileage.
 
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Old 06-25-2014, 09:07 PM
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well its an auto 4wd and im not sure on gears but it probably dont help its a mega cab with a 6in lift and 37s under it haha. good thing i have my 00 that gets 22-25
 
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Old 06-25-2014, 10:26 PM
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Yea.... With the lift and tires your good to go...... if your past 130K maybe get the valve lash done..
 
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Old 06-26-2014, 09:16 AM
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Originally Posted by hulse09
well its an auto 4wd and im not sure on gears but it probably dont help its a mega cab with a 6in lift and 37s under it haha. good thing i have my 00 that gets 22-25
Well ya didnt mention the lift and tires....LOL. Id say youre at your peak mileage with your combo.....unless you back off the skinny pedal some.
 
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