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Custom Dodge Ram Performance Mods - Engine - 5.9 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!


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  #1  
Old 03-06-2012, 06:05 PM
Morse4 Morse4 is offline
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Default 5.9 Magnum Tuning For Economy

I have the chance to trade my '98 Dakota with a 3.9 V6 for a '97 Ram 2500 with the 5.9 V8. I'm in college and live 4 hours from where I'm going to school so gas mileage is pretty important. Whats my best option for increasing the fuel economy? Is there a chip or tuner that would boost my MPG that anyone would reccomend?
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Old 03-06-2012, 07:21 PM
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If your concern is fuel mileage than the 5.9 is not for you. Mine gets around 12 to 13mpg downhill. Driving that far with gallon of gas 4 dollar ish these days. I'm driving a 04 grand cherokee with the 4.7 to work 112 miles round trip everyday and spend 100 bucks a week in fuel. It's getting old real fast.what does your 6 cylinder get for mpg?
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Old 03-06-2012, 07:29 PM
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Now I can say that my 99 5.9 is getting about 15-17 I am using a stock setup on tires but do have a mud terrain tire. I keep them aired and put in a open air filter I would recommend a CAI instead also I lost the mechanical fan for an electric one on the cooling system thats when I saw the big jump in fuel savings. Oh I also have a high flow exhaust. But the 5.9 is not a gas saver motor at all
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Old 03-06-2012, 11:44 PM
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Keep the Dakota, it's lighter and the 3.9 isn't bad on gas.
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Old 03-07-2012, 09:23 AM
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Low restriction muffler and a couple riders to defray costs.
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Old 03-09-2012, 08:33 PM
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I agree with the others. The 5.9 is a very thirsty motor. I'm strongly considering getting rid of mine. Take the good advice of the other forum members.
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Old 03-11-2012, 08:38 AM
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the gas milage in the truck is what it is its a 360 block its never been good on gas and never will its built for work and pulling not for fuel economy thus said i get 15 on the highway on a good day lol the gas prices are really starten to irritate the hell outta me cause i love my ram but not the gas prices if only they where back at $3.00 or even $2.50 a gallon not $4.00
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Old 03-11-2012, 11:28 AM
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I don't believe you're ever going to get any kind of mileage out of a 5.9 and even 16mpg averages are skeptical...remember these trucks were built when gas was 1.68 a gallon!
That being said, I would recommend a tuner to maximise your fuel delivery and ignition advance. Don't lift the truck, keep the bed empty after hauling loads and run a low resistance tire. Keep your front end aligned, and while bolt on mods like fans, exhaust, or air intakes might help, nothings really going to change until you retune or put your truck on a diet.
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Old 03-24-2012, 01:13 PM
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Quote:
Originally Posted by Okiespaniels View Post
I don't believe you're ever going to get any kind of mileage out of a 5.9 and even 16mpg averages are skeptical...remember these trucks were built when gas was 1.68 a gallon!
Very true but a whopper combo with cheese was only $2.85 then too.... my point is inflation has changed the value of a dollar and we all make more $$ because of it these days so that $1.68 was more like $3.25 back then...

I totally agree though...I get 12mpg with 3" lift 35" tires and 4.56 gears to correct for those tires... not to stereo type but younger drivers often drive more aggressively so its not uncommon for those drivers to cry about 8-9 mpg with 5.2 or 5.9Ls on forums like these..(blown plenums and improper tire/gear ratios dont help)
You seem very conscious of this though.

Last edited by augiedoggy; 03-24-2012 at 01:17 PM.
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Old 03-24-2012, 02:37 PM
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A small block in a 2500 and you're worried about fuel economy....?
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