2011 Dodge 2500 Cummins crappy MPG

[Dogmeat]

Not to start a pi$$in match, but actually if you do a lot of highway driving, taller tires can help your mileage as it lowers your cruising RPM.

Maybe slightly and in some circumstances, you also pick up added drag from the wind resistance they cause too.

Overall I've never seen an increase in mileage when I swapped to a bigger tire, gas or diesel.

 

[RCR3]

I'm trying 315/75 r16 toyo open countries on my 03 6.0 Stroker 65 mph is the best mpg I can get at around 17-18! Haven't pulled with them on yet but with same size BFGs I could squeeze 14ish pulling 28' enclosed!

 

[RX1MountainMan]

We have a 2011 Ram 2500 we bought new with the 6 speed manual. This was the first new truck I had ever bought so I wanted to keep the warranty. That lasted until around 9,000 miles when I couldn't take the 14 mpg empty any more. When we went hunting a were just crawling along on 2-track the dpf was constantly plugging, when it got cold if you let it idle to long it would throw a code and the dpf would plug up. If you took off to soon when it was cold it would throw a code. I made a call to Sinister Diesel and got an H&S tuner, 5" turbo back, dpf delete exhaust, cold air kit and egr delete. The first trip netted 19.8 mpg. If you keep it around 75-80 with the tuner on the high setting it's generally around 22 running fairly flat ground with little to no head or cross winds. I took it to the dealer for a cracked fuel filter housing and while the service manager gave me an ear full about no warranty the mechanic said that was the best thing I could have done for that truck as about 95% of what he worked on was emissions system related. When I pulled the egr crap off at 9,000 miles there was already an 1/8" to 3/16" of soot coating the inside of the intake tube.

 

[allied1]

I have two on the same H&S set up. Learned the hard way on the first go around with the '08. Did the second on a 2012 at 100 miles. F#CK warranty! And the EPA! FYI, get up grade head studs!!!!

 

[Bocephus]

We have a 2011 Ram 2500 we bought new with the 6 speed manual. This was the first new truck I had ever bought so I wanted to keep the warranty. That lasted until around 9,000 miles when I couldn't take the 14 mpg empty any more. When we went hunting a were just crawling along on 2-track the dpf was constantly plugging, when it got cold if you let it idle to long it would throw a code and the dpf would plug up. If you took off to soon when it was cold it would throw a code. I made a call to Sinister Diesel and got an H&S tuner, 5" turbo back, dpf delete exhaust, cold air kit and egr delete. The first trip netted 19.8 mpg. If you keep it around 75-80 with the tuner on the high setting it's generally around 22 running fairly flat ground with little to no head or cross winds. I took it to the dealer for a cracked fuel filter housing and while the service manager gave me an ear full about no warranty the mechanic said that was the best thing I could have done for that truck as about 95% of what he worked on was emissions system related. When I pulled the egr crap off at 9,000 miles there was already an 1/8" to 3/16" of soot coating the inside of the intake tube.

yes your dash is way off after the deletes and tune........................


and then you hand calculated it at 14-17 mpg, right?
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[snowmanx]

If it isnt hand calculated you shouldnt even post. ALL the diesels I've seen are at least 1.5 mpg high, and mine has been as high as 3 over actual mpg.

 

[Bocephus]

after putting MCC tunes on my H&S minimaxx, mine is 3-4 mpg off when going 65 not pulling anything. the dash will show 21-22 mpg, which is hand calculated to be around 18 real world mpg
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[ZeeRTee]

Delete does very little for mileage while towing. The EGR is basically shut off with a load on the engine and the passive regen slows the normal regen cycles. Good power available though. The Cummins 6.7 gets roughly 10 mpg towing a load at interstate speed, if the wind is blowing, + or - 1.5.

 

[Bocephus]

that is not true. with my stock 2012 6.7 i was stuck on 7.5-8.5 when pulling my 5th wheel camper at 65 or an open 4 place at 78-80 mph. while the load sizes were considerably different, the speed difference seemed to yield nearly identical mileage. after deleting, i get 10-11 pulling the camper at 65...........and you guessed it, 10-11 pulling the open 4 place at 80 down the interstate between ND and the mountains.


im not one to feed people full of chit when it comes to mileage. these are hand calculated numbers. if i told you what the dash said after i deleted, you know id be lying to you because it reads between 1-3 mpg high. my number are fairly consistent with other peoples results that are reported on the dodge forums
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[ZeeRTee]

So whats not true? 10, more or less + or - 1.5 with wind, is 8.5 to 11.5. Your range is 7.5 to 11. Your right, that is huge.

 

[Bocephus]

can you be more specific? im not understanding you
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[trickedout700]

Carlc is right a good MCC tune like Dave Mathews is awesome. I work along side Dave and I sell him Mini Maxxs then we throw a good tune In it. They run 100 times better than stock tuning IMOP. Call me if you haven't boughten stuff yet 406-899-2838

 

[jsledder]

Carlc is right a good MCC tune like Dave Mathews is awesome. I work along side Dave and I sell him Mini Maxxs then we throw a good tune In it. They run 100 times better than stock tuning IMOP. Call me if you haven't boughten stuff yet 406-899-2838

Do you sell the tunes for the Mini Maxx's?

 

[trickedout700]

Yes I do I sell the Mcc unlock code plus custom tunes. Call me 406-899-2838