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Hello, i'm new here and i've been reading around and decided to join so i could ask some questions and get a little help. I am wanting to buy anywhere from a 2004 to a 2007 Dodge Ram 2500 quad cab short or long bed Cummins 5.9L diesel. I am wanting to get it with under 150k miles so i can have it for a long time. But i am also wanting to do a lot in mods so i can get the best gas mileage possible...but i also plan on lifting it 6-10 inches and putting 20 inch XD monster rims and 35'' or 37'' Nitto mud/trail grapplers, and i know that will hurt it a lot. But with a cold air intake, dual exhaust maybe stacks, a chip and or programmer, all the gauges/pods, and whatever else...please help me with what will help improve gas mileage as much as possible after the lift and tires. thank you!!
 

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Hey there...

It seems like things have been pretty slow around here lately, so I'll hop in with my 'experience' to try to help..

You are right.. your tire selection will not help your fuel mileage. What do you want out of it for mileage?

My 06 5.9 3500 MC gets 16-18mpg on the highway. I have a k&n intake/filter, stock height, BFG ATKO 265/70/17 tires... I was hoping for 20+ but all things considered for the size of the truck, I've learned to be very happy about the fact I'm not getting 5mpg.

I have a BullyDog Tripple Dog and have not found it has helped with my mileage at all. I don't know if you could find a programmer that improves the mileage enough to pay for the programmer.

The historical stories about the 5.9 getting 25+mpg, where due in part to the truck being lighter, and there was less environmental crap restricting their performance. Its a different game we play now...
 

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Hey there...

I have a BullyDog Tripple Dog and have not found it has helped with my mileage at all. I don't know if you could find a programmer that improves the mileage enough to pay for the programmer.

The historical stories about the 5.9 getting 25+mpg, where due in part to the truck being lighter, and there was less environmental crap restricting their performance. Its a different game we play now...

I have an 06 Ram 2500 with 5.9. I recently installed an Edge Products Juice with Attitude looking to increase mileage. However, I am still “playing” with it but have a feeling that I bought a very expensive fishing weight. :4-dontknow:
Steve.
 

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yeh thats sounds right ,my 06 mega cab 4x4 5.9 cummins has edge ,airbox,juice attitude and around town i only get around 15 pulling trailer only 12.5 .has 20 lt tires but wouldnt part with the truck ots the best allround truck i have ever owned.
love the 5.9:smileup:
 

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My 2007 2500 four door six speed with a 5.9 is getting 20 mpg highway here in north east. I have edge j/a set on mileage, with a 4"turbo back and 5" tip. Still has stock air for now, and 265/70/12.50 tires.
 

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My 2007 2500 four door six speed with a 5.9 is getting 20 mpg highway here in north east. I have edge j/a set on mileage, with a 4"turbo back and 5" tip. Still has stock air for now, and 265/70/12.50 tires.
If you picked up 1 mpg with your Juice, I'd be impressed.. having a quadcab, its a little lighter than my MC, so you getting 20mpg is definitely believable... I've also found if I bring my BFG TAKOs up to max psi, I can get a little more mpg... the wear on the tires I figure would negate any mpg improvements..

Your 4" exhaust, is same as stock... your 5" Tip, won't do much for mileage..:LOL:

If you think about the stats, truck weight, lack of aerodynamics, and the drive-train rotating mass, the fact we aren't getting GPM, is amazing..
 

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Well ill give ya some advice too i guess. Our 04.5 we just put on the new edge CTS and we gained exactly 1.4 mpg , until the edge crapped out and now we are on our 2nd edge box. From my experiences with our cummins and we have 2 now but have had 6+ . My best experiences for setup and mileage have been this .
S&B CAI
Smarty jr or Smarty SR
4" turboback straight piped exhaust
FASS Platinum

We have run this setup on my 03,04,05,06 and consistantly across the board got 13-16mpg pulling and 21mpg hwy. We tried K&N filters but they let way to much dirt into turbo and ended up screwwing a couple up. Went to a diesel shop around here and the guy said throw the K&N away they dont work good for diesels and do more damage than good. So we started running the S&B and loved it. Completely sealed box and doesnt let any dirt in. As for the EDGE products i have noticed our EGTS skyrocket when pulling heavy and with the smarty we never saw above 1150. So hope this helps but we have tried a ton of combos and the setup above is what seemed to work the best for us in all our trucks
 

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Got an 06 5.9L with a 6" lift and 37"tires with 20" rims. Tires are nittos grapplers, also have the banks six gun tuner with the sealed ram air box and programmer, I get about 18-21 hwy depending on where I'm at, but to be honest I don't see too many other trucks like mine out there. I wouldn't go over 6" lift though if I were u cause shit starts to break quick like ur steering linkage and ball joints which I've had to replace. Plus it starts to put a strain on ur driveshaft too. Diesels look way bigger with lifts compared to ur gas trucks anyways.
 

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My 04 2500 CC diesel with a K&N filter gets 27.2 highway based on the overhead console. The key is to pretend there is an egg between your foot and the pedal. This was done driving around the beltway of DC. The truck has 150k miles and purrs like a kitten.
 

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My 04 2500 CC diesel with a K&N filter gets 27.2 highway based on the overhead console. The key is to pretend there is an egg between your foot and the pedal. This was done driving around the beltway of DC. The truck has 150k miles and purrs like a kitten.
The overhead is notorious for being way off. The only way to get an accurate reading is to hand calculate it. My overhead told me I was getting 22.5mpg on my last trip, hand calculated it came out to 16.7mpg.
Same drive my overhead was reading 16.5mpg when hand calculated I was getting 14.5 (towing)...so there is a bit of variation.
While driving it easy on the highway will net more mpg, id be surprised if you actually get more then the low 20's on the highway.
 

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If you want MPG's and longevity? Leave it alone! I suggest the Zone 5" kit if your wanting 35-37s. I have it on my 08' HEMI and I'm gonna put one under my 06' Mega Cab 5.9. I've run 4 different lifts on that truck now and this is the only one I've liked. The talk about a lift looking bigger on a diesel truck is nonsense. Doesn't even make sense? That common rail ways more than my HEMI with the trans and T-case still attached. Yes, some makers claim to have different packages for diesels. Fact is, if you look at the part numbers, they are the same. It's just them giving you a reach around. If you do jump up in tire size, I'd also suggest getting a bigger brake set up. With my 35s and stock brakes I couldn't even lock them up. My 37s, I couldn't lock them up on wet pavement! Power stop truck and tow kit was worth it's weight in gold. Now it doesn't matter? When I get on the brakes, I stop. New truck is getting those too.
 

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IMHO if you start to mess with the front end of those trucks---04,05,06--you better be prepared to eventually deal with DW. The front ends on those trucks were not built very well and lots and lots of people had trouble with their trucks. While the 5.9 is probably one of the best diesels made the more mod's you do the more potential you have to have problems. Plus the stock auto trans wasn't any real winner either. There are a lot of people that have not had any trouble---yet---but in my experience if you want a good reliable truck that will last you a long time and give you reasonable mileage, leave it alone and just drive it. Mine lasted over 150k, and I had an Edge chip, custom cold air intake and custom exhaust, but I didn't dog it every day from stop light to stop light.
Jay
 

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I hand calculate and run 14 mpg (decent load) to 18 mpg (no load). Also have a K&N filter and just cleaned it (looked like fine mulch). I appreciate the feedback on S&B as I plan to look into it. I have the 5" tip but it's in front of the rear tire (got to fix that). My partner runs a 2wd 12 valve single cab longbed and gets a bit better (no lift of course) and has a straight shift. We only haul about 7,000 lbs. per pick up we flip (trucks from COPART, US Southern states). I've been off the computer about 6 years but since back surgery, I'm back. It's is a great site here with a wealth of information and I hang off every word...thanks to all!

need to update my profile I reckon... Richmond
 
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