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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 10-12-2010, 10:13 PM
05qc 05qc is offline
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okay, i just got this truck. it's an 05 with 38k miles on it. just refilled for the first time, and to my horror, it was 14 mpg. i drive about 50 miles total round trip a day, mostly interstate with some city miles, but not many.

what can i do for better mods? all i've got now is a weld in muffler.
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Old 10-12-2010, 10:20 PM
RootBeer RootBeer is offline
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Best bet is add a CAI and set up dual exhaust. Unfortunately the 4.7s aren't known for their mpg.
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Old 10-12-2010, 10:28 PM
BigOrange BigOrange is offline
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Well, you're on your way there with the muffler, and if you left your stock pipe out the back, that's good as well, because it's mandrel bent & flows well. Next, would probably be an intake to get rid of the engine hat & improve flow there.

A lot of people also have a tuner or programmer as well, which have a fuel economy tune.

I'm not sure how mpg a tuner yields, but I would say the intake & exhaust combo would probably get you another .5-.8 mpg (depending on how you drive)
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Old 10-12-2010, 10:38 PM
05qc 05qc is offline
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i dont drive that fast or hard, i actually tried to keep it below 2 grand this week lol. i have also heard about not driving with the o/d on in the city as it will keep from "lugging". this mileage is terrible lol.
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Old 10-13-2010, 12:33 AM
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Welcome to the life of a 4.7 owner the only downside is the mpg's my 4.7 Dakota average about 13 and 15 but after I got an exhaust inake and programmer I pulled around 14 and 17 (then I lifted it and well there went that lol) I highly suggest a programmer and a cai even in the performance tunes youll get better mpg's and the mpg tune your truck will still pull harder than stock and get better mpg's check out rpmoutlet.com they have some nice packages and ya save some money buying the cai and programmer together I suggest the flashpaq by s/c good luck
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Old 10-13-2010, 11:40 AM
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The truck is heavy and the motor is smaller. Buy a light weight bed cover this helped mine. It wont get much better than 15 to 16 around town.
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Old 10-13-2010, 10:05 PM
05qc 05qc is offline
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this sucks lol. i thought it was rated at 18 mpg hwy. i'll see what i can do on the next tank really babying it.

i have been thinking about a tonneau cover as well
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  #8  
Old 10-13-2010, 10:11 PM
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this is a dodge thing if you really think about it rams really don't do well on gas at all any ways but hey you got to love them. i have an o6 with the 4.7 and it is getting about 15.5 right now and is all stock my 3500 dulley 5.9 magnum well 8-10 mpg's so it could always be worse
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Old 10-13-2010, 10:37 PM
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I wish I could get 14 mpg . I just used mine recently on a 400 mile trip and was easy on it , the best I got was 13.2 .
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Old 10-13-2010, 10:41 PM
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dont feel bad tom i went to see family a 200 mile hike i took my 3500 11.87mpg ouch! and it was all highway
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