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Discussion Starter #1
2003 Ram 1500 V8 5.9L (gasoline engine) 65k miles

I am by no means a gear head but I do like my big truck. Quad cab to get the family around and to make trips to Home Depot / Lowes / etc.

But, I get lower gas mileage than I would expect. 11-13mpg. inlcuding highway.

Looking to get ideas on how best to boost the mpg's.

I replaced the air filter with a K&N but no noticeable difference.

spark plugs / plug wires?

Any suggestions?
 

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Did you get a complete cold air intake kit, or just replace the filter? If you only did the filter, then drop that and buy a real cold air intake. You can also open up your exhaust and get a programmer as well. These will really help out with your mileage.

Before my current motor build, I had a low 13 second truck and still got almost 20mpg on the highway (70mph) and about 13-14mpg in the city.
 

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I replaced only the filter. Stock intake.

Was also told the programmer only worked for diesel engines. Recommend a programmer mfr?

Didn't feel comfortable tinkering with anything while the vehicle was still in warranty. But, now that it's not, katie bar the door!
 

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Hypertech and Superchips both make programmers for your engine. I dont own a 5.9 though, so I couldnt tell you which one is better. The Superchips is better for the Hemi guys.

And a cold air intake is a very simple mod. You can make your own for cheap or the "off the shelf" intakes usually run about $250-$300.
 
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