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Old 10-22-2016, 02:05 PM   #43
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EcoDiesel is a very efficient engine. The main problem with EcoDiesel is the very limited payload. One member had 850# stamped on the door sticker. Thats less than my Subaru Forester. It works for you as you travel alone and tow empty Airstreams, and thats great, but it may not work for folks who pull a loaded trailer, or have family members, or do not want to exceed/reinterpret the ratings. There are different vehicles out there serving people with different needs.
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Old 10-22-2016, 02:25 PM   #44
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After a little reading I learned our Ram EcoDiesel does have a turbine brake. The vanes in the turbine are variable and controlled by the ECM, which partially closes them for deceleration building back pressure in the exhaust side of the engine.

The GDE turbine brake option VernDiesel uses in his GDE tune closes the turbine vanes even more (but not fully closed, and programmed for drivability as well as effectiveness) for increased turbine braking.

The idea that the EcoDiesel is without engine braking is not true, and I can say from experience it works very well, greatly reduces the need for truck and trailer service brakes. I think the 8-spd transmission and 3.92 axle are important to optimize this function.

Most probably not as effective as the exhaust brake of the larger diesels but we don't have the extra 2,000 Lbs or more truck mass to decelerate.

We're are in the mountains of New Mexico on a trip to California right now, our second long trip with our EcoDiesel. No braking problems, no payload problems, no stability problems, no inadequate power problems. The more we use it, the more we like it.
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Old 10-22-2016, 02:47 PM   #45
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Originally Posted by Milo1952 View Post
Will be new to airstreaming next year. Retiring in March.Starting from scratch for everything.
My choice of AS will be a late model 25' FC.
Am looking at purchasing a new 2016 Ram 1500 eco diesel as TV. short bed.
It just fits in the garage.
Am looking for other options for TV as my wife does not like the idea of
getting a pickup. Looked at Jeep grand Cherokee but the folks at CAN-AM
said it is NOT one of their favorite choices for towing.
Funny, they told me my Grand Cherokee would be great for towing the trailers we were looking at. It was a great all around vehicle, maybe a little light on the merge power. Also light on payload but I never worried about it and never had a problem. It's not like an airplane; it still was fine with the seats filled.

Test drove the Ram and loved it, but acceleration at freeway speeds was a deal breaker and I ended up with a much larger truck. The CanAm tech kinda laughed when I brought the Bambi in for a checkup, and their eyes got big when they saw no WD bars.

On the downside, the mileage sucks on my F350, with or without the trailer. But if a had it to do all over, I would do the same thing.
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Old 10-22-2016, 06:32 PM   #46
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rostam, Agreed their is no one best best truck it depends on a particular persons needs. How much weight you can put on them is less than a HD and some people will need a HD. I do try to always point out that they are new dry and the weight of the trailer so people can use that info to best compare it to their use.

I can't speak to how well the mechanical braking as DC Bruce says works in a half ton gas truck. I can say the enhanced turbine braking on my ED will hold the speed to about a 6,000 pound trailer on a 5% grade. Heavier than that and you occasionally will need to supplement with the factory trailer brake controller or your truck brakes if you choose to use them. This is not only very reassuring when coming down a grade its has helped save my truck brakes as the originals are still smooth with good wear left at 232,000.

Merge acceleration would not match the 3.5 EB or the 6.2 GM but with the 3.92 & tune I can say I have no complaints and I don't think most people would.
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Old 10-22-2016, 07:39 PM   #47
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So the question is if the EcoDiesel has a variable vane turbine brake that creates back pressure in the exhaust system (like the big and small GM Duramax diesels do), why don't they state it has an exhaust brake?

I suspect it is because the Ram Cummins has an "real" exhaust brake (and over twice the engine size) which they are proud of, they would rather reserve the name, exhaust brake, for the Cummins. They are different, and by comparison the EcoD is weak.
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Old 10-22-2016, 07:51 PM   #48
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My guess would be that transmission programming has more to do with it in the ED. "Engine braking" covers that pretty well (or however your owners manual spells it out).

Exhaust braking is not a free lunch. VernD can probably dissect it. A minor amount, stock (under particular conditions; more a matter of drag than backpressure) to a significant amount -- the real thing -- with aftermarket tune, is my guess.


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Old 10-22-2016, 08:02 PM   #49
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I would never had considered a tune for our Ram EcoD, but the enhanced turbine braking program from GDE makes it very tempting, not to mention the EGR delete, and the claim the tune doesn't show up when in for dealer service unless you tell them.
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Old 10-23-2016, 06:02 AM   #50
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I would never had considered a tune for our Ram EcoD, but the enhanced turbine braking program from GDE makes it very tempting, not to mention the EGR delete, and the claim the tune doesn't show up when in for dealer service unless you tell them.

As you're actually "working" the truck, the chances of emissions related problems are lower for you than for soccer mommy & softball daddy.




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Old 10-23-2016, 08:03 AM   #51
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I don't understand, as there is no such thing as too much horsepower or too much money, with the 6.7 you also have an exhaust brake that actually works..
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Old 10-23-2016, 09:16 AM   #52
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TJ, we looked hard at and drove the 2500's early this year, gas and diesel, there is a lot to like. For some people. We need the 4x4, it's high and I'm 71 soon. The axles are both solid axle, the steering box is recirc ball, great stuff for heavy work which we never use it for. The fuel economy is less than the light truck. The everyday drivability and ride does not equal the light truck; we travel months at a time so it must be our daily driver six months year. It was priced much higher, less incentive and discount, we took 0% interest rate (our savings do slightly better).

Overall, the 2500 is a very capable pickup, most of it wasted to pull our Airstream. My Dad had a trucking business, I grew up driving and riding in them on country roads. Enough of that for me. Our Ram 1500 is a very smooth pickup in every way, it's perfect for us and our Airstream. We have plenty of engine torque and money, try to use both wisely.

BTW, my son's initials are TJ, named after my old Grandpa who farmed with horses before my time. I think he would agree with you "you can't have too much horsepower". I doubt though, he would hitch up four horses when he only needed two.
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Old 10-23-2016, 11:11 AM   #53
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Doug I don't see the 3 to 5 mpg that they talk about on their site. But I have seen an honest 2 mpg in my average. Thats easily paid for itself a couple times over the last 200k that I have had it. I don't think you would have emissions problems because of the towing but not recirculating the soot back into the engine has to be a good thing. I have taken my MAP sensor out for preventive cleaning maintenance before and after and the difference is dramatic.

The brake was a good confidence and safety improvement. Came down grades at over 15k CVW confidently with no drama and no need on dry pavement to even use the foot brake to control speed. The cruise is much more relaxed and works much better especially towing. When load increases from a hill it adds fuel slower and allows it to drop up to 2 mph before ramping up the fuel to maintain speed or downshift so its night & day better IMO. There is a noticeable power bump nothing dramatic. Overall drive-ability & operation is improved. Regens are reduced and you will use less DEF.

Its not cheap but neither are shop repairs. My only repairs in 232k is a light switch at $104 & a lift pump at $158. I had a delivery near their shop so they reprogrammed it & we swapped it in about 20 minutes. They sometimes do a group discount for the ED forum members when they do several in a city at one time.
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Old 10-23-2016, 12:48 PM   #54
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The GDE Tune's EGR delete caught me eye. Fifteen years ago the EGR clogged up our VW turbodiesel so bad it would barely run. Everything in the intake system, turbo, intercooler, manifold, right down to the intake valves. Many hours labor taking head off and manually cleaning it out.

Good car, in fairness this happened when I was talked into using high-percentage biodiesel (because it's clean and won't gel, the farmer-owned coop said) during Minnesota mid-winter. Nonetheless, I hate that soot and gunk going through our intake system.
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Old 10-23-2016, 01:20 PM   #55
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Originally Posted by wulfraat View Post
Someone asked for the specifics of my 2012 QX... here are the door stickers...

Great tow vehicle for my 25'...

Attachment 273381
Attachment 273382
Hi, I have been looking into getting a QX56 or 80 and I thought the GVWR was 8500. Does it depend on your tow package? We are looking to get a 28ft Airstream.

Thanks!
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Old 10-23-2016, 02:45 PM   #56
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Tow Vehicle Recommendation

I have a 2012 QX56. The GVRW of the QX 56 is 7,500lbs.

It's rated to pull 8,500lbs with 850lb tongue weight.

All of the 2011+ QX should have a class IV hitch with integrated 7 pin connector. The hitch is substantial and is welded to the frame.

All infiniti QX have the same power train - 7 speed transmission, 400hp and 413 ft lb of torque.

For your airstream you'll want to make sure that your tongue weight is 850lb or less.

Make sure, as with any 1/2 ton vehicle, you watch your payload. Mine has a 1,433 lb payload which leaves 673lbs for people and gear after my tongue weight of 760lb is deducted.

The 2011+ QX makes for an excellent tow vehicle in my opinion and with independent suspension (air springs in the rear) things are very very smooth /comfortable with or without a trailer in tow. And there is plenty of power and torque for a mid sized airstream.

I use an equalizer hitch with fairly aggressive weight transfer and both my QX and trailer sits level +/- 1/2" . It works well for me.

If you have specific questions about the QX PM me, I've got 70k miles on mine and about 15k of those are towing my 25' international....
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