does any one know how to get better fuel mileage for a '10 cummins?

 

There are several ways.

Easiest one is watch the skinny pedal.

You could deleted the emissions equipment and install a programmer, but that would/could cause issues with warranty.

Which route do you think you may want to go?

 

deffentally dont want to watch the pedal, so would you have any suggestions on a programmer that doesn't void the warrenty?

 

My 12V 1998, my 2003 24V and this present 2007 5.9 all started out with lousy diesel economy. What I did within the first 200 miles was pull a max weight trailer up (always the same) hill which is 6% and 24 mile grade. Really cooked it then shut it off at the top after idling down for 4-5 minutes. Half hour later start er up and go home. This has always netted me at least 15% uplift in fuel mileage and more power. Now I know our American brothers who live in the east and south do not have the luxury of hills to pull up but loading the truck to the max and driving it hard is the way to get better mileage from new. An acquaintance who bought the 6.7 tried the same trick and got similar results.

 

Well any programmer has to potential to cause issues with warranty. No programmer for the 6.7 is undetectable, so should a dealer go looking for tattletales, they will be able to find them.

That being said, individual dealers treat these situations differently. I would have a good idea of where my dealer stands before taking the plunge with a programmer and/or deletes.

Now, if you are like some of us and a little less concerned with warranty, then the sky is the limit.

As of current, the only programmer available for the 2010 6.7's that does deletes is the H&S

 

I do not know about you, but my Gas Mileage is way better than any gas vehicle on the road. I can put a gallon of gas in a container and drive until it evaporates.

We have diesel truck not a gas truck, therefore ask about fuel mileage. I did not buy my truck for great fuel mileage. I bought it to pull my trailer, knowing that a 3/4 ton or 1 ton truck will never get what a Smart car or Mini Cooper will get but they can't pull a trailer either.
All but one of my vehicles that I have owned since I started driving have never had better than 11 to 12 miles a gallon in the city and maybe 13 or 14 on the highway. This goes all the way back to 1969 with my first vehicle. Some even got 8 to 9 miles a gallon, like my 1978 Cherokee Chief with a 360 CID, V8 full time 4 wheel drive.
My Dodge is by the best I have had and this is only 14 miles to a gallon in the city and 16 on the highway with out the trailer. With the trailer I may get 11 to 12 miles to a gallon.
Jim

 

There isn't much you can do to increase your fuel mileage without voiding the warranty. The muffle is a flow thru design and it is not worth adding an after market. The fuel mileage isn't all that bad considering what they are. They could be better but it is what it is. It compares with my 04.5 5.9L but then that truck wasn't so good until it broke in. I hoping the same for this truck....

 

I don't have a 4th gen Cummins - yet - but I'm thinking about it!

My 2005 Cummins is the third 3/4 ton truck I have owned. My 1997 Ford F250 (460 cu in gas) got 8 to 10 mpg. My 2000 GMC 2500 (454 cu in gas) did 10 to 12. My Dodge Cummins always gets at least 14 to 15 (with winter fuel & cold temps) and during warm weather will do 16 to 20. And there's no comparison between the power of the diesel vs either of the gas trucks.

I'm following this 4th gen forum to see if I should change from my 05 to a 2010 or 2011 - but if I stay with a 3/4 ton truck there's no question it will be a diesel. Even if the 4th gen mpg is down a little it still seems better than a gas engine.

 

I have a 2006 Ram 2500 diesel and "just putsing around" I average 17 mpg. Sometimes I'm hauling a small trailer, sometimes a bit of a load. On a trip, empty I averaged 19. Definitely for the size of the truck it is dramatically better than a gas vehicle.

 

I would unplug the egr or do the dpf delete's (programmer). The truck in stock form, no way to get better fuel mileage. Just the way it is.

Stock I was around 14-15mpg, today I'm 18-20mpg.

 

These trucks are difficult to get great mpg out of. I'm getting about 14.5 mpg combined city/hwy and between 17-17.5 mpg highway. That's not bad for a 7000 lb truck.

Light throttle control will net you better economy obviously, but your truck will only give you so much. Properly inflated tires may as well.

Most of the guys that delete emissions claim better mpg, and that is tempting. Right now, I'm more concerend about having a warranty than I am with mpg.

Hopefully the upcoming Smarty release may have a better fuel economy tune.

 

Well duh! That's quite a revelation. The guy asked "does any one know how to get better fuel mileage for a '10 cummins"? Your entire post was nothing but useless dribble, and you didn't even come close to giving any info regarding getting better fuel economy out of a 2010 Cummins

 

I just returned from a short trip. I adveraged 19 mpg on the hwy at 65 mph. This was hand calculated and over a 293 mile trip. Just turned 1,200 miles on the truck. Got better than a friends new hemi. I'm satisfied.

 

You must have had a helluva tail wind.

 

It was a calm day. The roads were pretty flat as well. What seems to be the norm for the 6.7?