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Discussion Starter · #1 ·
I finally decided to take the jump from gas to diesel. I traded in my 2011 1500 CC Hemi for a 2012 2500 CC cummins. I'm not impressed, and the mileage is no better than the Hemi.

The biggest thing I tow is a toy hauler, the Hemi pulled it just fine but the weak coil rear springs just couldn't handle the tong weight, even with air bags.

I've been reading through the forums and it seems the DPF delete is what is needed, but I'm not ready to void the warranty yet.

What's a good programmer that I can use to increase mileage. Power isn't a priority yet, I just want to be able to remove the programmer and take it in for service without leaving tracks.

I was thinking about the diablo sport extreme power puck. Anyone have any experience with that programmer?
 

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Smarty is the best programmer for any cummins power plant. Until you do that dpf delete, you will be unhappy with your cummins. After the delete, you will notice increased mileage, hp, tq, and you wont be breaking down everytime the dpf clogs up. Dont forget to the delete the egr too
 

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Discussion Starter · #3 ·
Smarty huh, I don't think I've heard of that one, thanks.

Yeah, that's what I've been hearing is do the DPF delete and I'll be happy the the cummins but I'm concerned about voiding the warranty.

Thanks for responding
 

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I'm sort of in this same situation. I have the 2011 3500 with the 6.7 diesel and if I'm lucky I'm getting 16mpg unloaded w/cap on the bed. Recently its started running about 16.8 on the interstate, again unloaded. Loaded with either the cargo trailer or the flat trailer it drops to 13 and 14 respectively.

I, too, have been told about programs that improve things but have concerns about warranty - not to mention potential damage or other problems. I do need the power, and with diesel still climbing in price, I need the mileage.

Smarty? I'll have to check that out. How hard are these to install/remove and what happens with the warranty (I'm already over 20K miles with the truck being new in August '11).

thanks
 

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Smarty is a good choice, but for the 6.7L the H&S programmers have an edge in the performance category. The biggest thief of your mileage is the emissions equipment and the need to superheat your DPF during the regen cycles, which uses raw fuel to do so.

For your warranty, you'd need to remove the programmer and set the programming to stock before taking it in to the dealership for servicing.
 

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I run the h&s minimaxx on mine and am seeing 18-20 highway, 12-13 while towing my 19' enclosed. Smarty or h&s is your best bet for the 6.7 but with either it wont matter if you take it off before warranty work cause the dealer can till it was on there if they dig deep enough. Also if you do go with a programmer, it's likely your trans will fry if you run the larger tunes. My trans went out at about 55k.
 

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Also talk with your local dealer or who you bought it from because alot of dealers are "delete" friendly mainly because most of the warrenty issues have been because of the dpf and egr systems. Running a diesel at 1300+ during a regen actually hurts the motor more. H&S mini maxx is the way to go and as stated above make sure you do the egr delete as well.
 

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I run the h&s minimaxx on mine and am seeing 18-20 highway, 12-13 while towing my 19' enclosed. Smarty or h&s is your best bet for the 6.7 but with either it wont matter if you take it off before warranty work cause the dealer can till it was on there if they dig deep enough. Also if you do go with a programmer, it's likely your trans will fry if you run the larger tunes. My trans went out at about 55k.
Wait . . . what's that about frying the transmission???? :smiledown: Not optimal. What causes that 'cause the bump in mileage (18-20) isn't worth a transmission.

BTW - does it matter if I have an automatic?

What are these things that are deleted? Does it make the engine run louder? What happens without the emissions stuff?

Thanks

George
 

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Mina is also an automatic, these transmissions can't hold much more than stock power. I was running the biggest tunes with a larger turbo which caused mine to go so soon. I'm sure it would have lasted longer had I takin it easier. I'd recommend to get the overdrive tune from h&s if you do go with there programmer. It'llgive the trans a better chance of surviving.

These 6.7's do get a bit louder with all the emmissions deleted but nowhere near as loud as the older 5.9's. I've had mine deleted since 14k miles and have 70k now. There are a few dealers that are ok with deleted trucks and will still warranty them but a lot that aren't.
 

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I see a lot of posts on this board, and a Cummins board I frequent, complaining of fuel mileage. I own an early 2004, quad cab, 4x4, short bed with 4.10 gears. I get about 16-17 mpg at best, and if there is a lot of in town driving, I get about 14-15 mpg. My truck also has a leveling kit on it, which doesn't help, but the tires are stock size. The 2003 and early 2004 are considered by many to get the best mileage of the common rail engines. They don't have any real emissions equipment on them. But I still don't consider that really good mileage.

Someone posted that there 3500 is getting the same mileage I am. To me that sounds good. The 6.7 makes more power than my 5.9. I've read forums where people claim to get really good mileage, but I doubt many of these claims. These trucks are heavy, have poor aerodynamics. My truck gets about 1 to 2 mpg better than the GMC, regular cab, 1500 gasser I traded in on my Cummins. This amazes me because my Cummins weighs about 2300 pounds more, sits higher and still gets better mileage.
 

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Soon as you run a programmer, you void the powertrain warranty. This is the portion of the deletes that actually voids your warranty, the programmer. Removing the programmer will not help if you need to use the warranty because they all leave a digital fingerprint on the ecm even after being removed. If you're going to use a programmer, do the deletes. Unless you can find a delete friendly dealership as some have already mentioned, they I'd recommend you do it. Few of my buddies also have the 6.7 and have been denied warranty work because of the tuners (one's a smarty, one's an h&s)... These funky vg turbos ain't cheap either. Mines staying bone stock for now
 

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^^Before you go jumping the gun saying the sky is falling remember one thing about your warranty, there has to be a problem CAUSED by your modification, not just be present. They can not void your powertrain warranty just because you installed a programmer, however, if you run your programmer on the 'insane' setting and melt a turbo, blow a tranny, or other such occurances, then you kind of asked for it. If you use the programmer to perform deletes but don't run any of the performance tunes, most dealerships that I have dealt with are quite understanding, it may be because I'm in Alberta and this is Canada's truck country.
 

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Egr delete

I'm thinking of the smarty tuner and the dpf delete and waiting on the egr delete. What is the thoughts of that? moparguy62 at aol


Smarty is the best programmer for any cummins power plant. Until you do that dpf delete, you will be unhappy with your cummins. After the delete, you will notice increased mileage, hp, tq, and you wont be breaking down everytime the dpf clogs up. Dont forget to the delete the egr too
 

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True, but murphy's law would insist that as soon as I do deletes, something simple and expensive, like head gasket or turbo would crap out and I'd be left high and dry... But if you have the extra coin incase a problem like that arises, then deletes are the only way to go. Most dealerships in the north east here are not delete friendly and will gladly bend you over on a warranty claim on deleted trucks
 

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2012 deletes

bought my 2012 2500 longhorn and found like many the milage was between 15 and 16 mpg and about 9 towing my 16000 pound toyhauler. owned a 2005 before and was very pleased with 20 mpg not towing.
deceided to buy an H&S and did the deletes and removed all the crap on the exhaust system.
results 18.5 all around and 12 towing. left the original muffler sound is the same.
yea if something goes wrong that requires warrenty it will rewquire me reinstalliong the pipe and pulling tuner then crosssing fingers. I am basing my confidence in the cummins powerplant by my past experience 7 years and only an ac blower motor for any warrenty. yeah i know anything can happen but sometimes ya gotta pull the trigger and roll !!!
love the truck now no codes or issues i run the tuner on stock so i am not overloading any systems so if something goes it wont be the tuners fault. H&S very good on customer service also.
goona pull the toyhauler to wv in a month man i love my diesel!!
 
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