I have a new 2012 6.7 deisel 2500 mega cab. Are there any upgrades that can be done to get better gas mileage? Such as straight pipe or muffler.Anything?

 

https://www.dieseltruckresource.com/forums/deleting-6-7-guide-making-run-right-t278158.html

Check out this link. Should answer some questions for you

 

^^What he said^^, happy reading.

You can also try unplugging the the connector on the EGR, most report an immediate increase of 2-3 mpg. Costs nothing, doesn't soot up your oil and no warranty issues- but you will get a check engine light and you may see a decrease in power (I did). If you do a lot of of city driving your DPF may clog up as the truck may not regen with the EGR unplugged. Highway driving/towing you might be OK.

 

Well, that depends.

1st question.

How are emissions regs in your area?

2nd question.

How much do you like your warranty?

 

No emissions that I know of. Need to keep that warranty until it expires.

 

Ok then.

Drive it like a truck. Work it hard when possible. Enjoy it and forget about the rest.

 

...and play around with unplugging the EGR, would like to know your results.

Other stuff that won't effect your warranty: Running your tires near max PSI (watch out for center-wear though), installing a bed cover & keeping the air and fuel filters clean are good for a couple of mpgs. On the 3rd gens, a cold air intake was usually good for a couple of mpgs, if you kept it clean. Can't speak from experience on these 4th gen trucks though. Perhaps contrary to common sense, I find that getting up to speed quickly (instead of a long drawn-out acceleration) seems to return better mileage, also turn the exhaust brake OFF when driving in the city as you need to anticipate traffic flow and coast efficiently between stops.

I've never tried folding the mirrors in, duct-taping the body panel gaps, removing the tailgate, and drafting semis on the highway- but if a guy were desperate....

 

Beautiful. Now I got a focus in life. Do they make white duct tape?

John

 

In order for this to work you will want to be at least 1 to 2 feet away from the back of the trailer!

 

And as a tractor trailer driver I implore you to NOT do this. It's extremely dangerous as well as a really good way to peeve the semi driver. I know it does me. I've been known to lock my brakes up for a second or two when I get someone up my butt for no reason. Haven't been rear ended yet but sure does wake the guy up tailgating me.
I also just got a 2012 Crew Cab 2500 with the 6.7 Cummins. If yours is diesel then no matter what you do to it it will not improve the "gas mileage" as they run on diesel. Sorry, just being a wise guy. I think we all know what you meant.
I wouldn't go unplugging anything if you are concerned about the warranty. I would however read the owners manual cover to cover and also check out the CD you should have gotten with it.
One thing Dodge recommends to do within the first 1000 miles is to hook on to a good heavy load and do a good pull with it as it is supposed to really settle everything in in the engine, polish up some stuff and seat the rings well. I haven't been able to do that yet and I know I need to. They say just doing that will also help improve the mileage.
A friend also told me to make sure and drain that water seperator every couple of weeks. Not a bad idea at all but please use a good catch can and have a good sealed container to put your waste in. Please don't just toss it on the ground or down a storm drain as that is not at all good for the environment or ground water. As a well owner I am very consiensous about things like that.
Best to just drive it and use it for what it's intended to do, be a truck. This is a whole new ballgame for me too, owning a diesel pickup and I can tell you that just in the short time I've been a member here there's some top shelf folks here and a plethera of great tech info and a ton that can be learned about our trucks.
Welcome aboard from one newb to another. Jim.

 

I found out that info from the tv show "Mythbusters". Ditto at what BikerJim44 says about it being extremely dangerous and a very dumb idea. MythBusters also say the same thing. If someone is tailgating my work vehicle I get on my 2-way and get our city police to take care of them. It's a very bad thing to do something like that to a school bus! I'm so happy I switched to the 5.9 from the 6.7. Better fuel miles and no codes to speak of!!!

 

Just kidding guys! Was hoping it would be taken tongue-in-cheek, along with folding the mirrors and duct taping the panel gaps.

I remember a Diesel Power (?) article several years ago about a guy who did that and some other stuff and could eek out 30mpg hwy with his 1st gen.