I have an 08 6.7 Ram, I have put 3500 miles on it so far and I LOVE MY TRUCK. I don't like the DPF, but I wanted brand new. I am sure somewhere down the line someone will come out with an aftermarket unit that is less restricting. I have more power than I know what to do with. I was driving down in Austin last saturday, it was raining out and I down shifted and gunned it and broke the tires loose at 40MPH. I say get one. the only problem I have had so far is an oil leak, which is my fault for straining my engine without it broken in. Oh, and it is a towing monster.

 

when my warranty is up i am ripping the DPF out and doing a regen delete. it destroys your fuel mileage.

 

What is this DPF delete box at? What is it exactly? Where do I find it?

 

I created a thread about this in December. There is a company called H&S Performance that has a "DPF Delete Kit" that contains a flanged pipe and a black box. See my post: https://dodgeforum.com/m_1082670/tm.htm

 

the DPF is a particulate filter in your exhaust system. the regen cycle is controlled by the ECM. there are a couple companys working on the kits now. i am going to do a turbo back exhaust (straight 5" pipes, no cat, and free flow muffler). and the regen delete will be a black box you plug into the electrical system.

 

Considering a used 2008 Ram 2500 with a 6.7 Cummins Blu-Tec. I'm aware of the DPF (Dual particulate Filter) in the exhaust and all the emissions compliant equipment added for stricter emissions standards. Want to know what the realized fuel economy of the truck is. For city, highway and does the mpg degrade with trailer tow..

My questions are this: Any owners of 6.7 liter Blu-Tec Cummins Diesels have city/highway/towing fuel economy numbers to share? Top off the tank and reset the odometer type calculation. Does it correlate with the overhead average mpg calclation of the "computer" if so equipped?

As a $13K option over the 5.7 liter gas engine, how much better is the diesel option?

Any shared experience appreciated.

 

For 3 years I had 2005 Ram 3500 4x4 with the 5.9 and a 4.10 diff
In 2008 I traded it agaist a new 2008 Ram 3500 4x4 with the new 6.7 and a 4.10 diff
So both trucks were identical except for the engine and tranny.
I haul about 15000 lbs every day so I saw a big difference in towing capacity with the new one. Better accelaration and much quieter than my 2005. When hauling i get better mpg with the 2008. About 7.8 mpg versus 7.2 mpg with the 2005. However my 2008 will be harder on fuel when empty. I will get 14 mpg with my 2008 and i did 15 mpg with my 2008.
This is all calculated mpg not from the trip computer which can be almost 1 mpg off.
Hope that helped
And by the way i never had problems with either truck. I had my 2005 for 3 years and I now have my 2008 since april 2008 and I NEVER had a mechanical problem even though I haul 15000lbs EVERY DAY!!!
My friend, who does the same work I do, has a Ford and can't say the same!!!!

 

I hauled a 15,000 pound trailer about 4800 miles across the country, from WA to FL, with my 08 (6.7, 68rfe, 3.73 gears) and averaged 12.5 mpg over the entire trip. Up and down the Cascades, Rockies, up the 10% grade to Mt. Rushmore, back down then up to Denver, back down and then up into the Blue Ridge Mtns, and back down to the sea in FL.

The trailer had 12,700 pounds sitting on the tires, and I know the tongue was loaded at least 15%.

I was running an AFE 4" turbo-back exhaust, EGR delete, Black Maxx programmer, and an Airdog 150 lift pump.

Not having the emissions equipment makes a difference. The trip across the country was done in the low and medium power settings.


The three weeks before I started putting my truck back to stock (selling), I drove the truck like a responsible adult and averaged about 16 mpg commuting to work. My commute is ~10 miles of 40-50 mph in-town highway with stop lights every 1/2 to 1 mile or so.

On the highway, 18 was about as good as I could get consistently.


Prior to doing the deletes/programmer, I averaged about 15mpg on the interstate at ~70.

 

The 3.73 diff will give you much better mileage than a 4.10. You will get about 3 mpg more.
95% of my driving is done in the city so that also kills my fuel economy. I chose the 4.10 because my truck rarely sees the highway and I sometimes( often) will load up to 20,000 lbs. The 4.10 gives me much better accelarations.

 

Stay as far away from the 6.7 with the EPA required air quality controls.

Any thing produced after 2003 has this attempt by your goverment to cost you heart ache and mucho money until you give up warrenty and make after market changes.