DP Tuner dissapointment - Diesel Forum - TheDieselStop.com
6.7L Upgrades and Aftermarket - Engine Upgrading or adding OEM or aftermarket equipment to your 2011-Up Super Duty truck with 6.7L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.7L Power Stroke engine.

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post #1 of 12 (permalink) Old 10-14-2018, 03:45 AM Thread Starter
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DP Tuner dissapointment

Have a 2014 6.7 that I bought a DP tuner strictly for fuel mileage. I bought this tuner based off of the recommendation of Powerstrokehelp.com's very own Bill, whom I trust very much. BTW, I opted for an emissions friendly 35hp tune for towing. Was I wrong to assume that I would actually see an increase in fuel mileage? What tuner should I have gotten for heavy towing and an uptick in fuel mileage or does that exist?

2014 F250 4x4, CC,6.7, DP Tuner, 70k
2006 John Deere 5225
2008 Denali 31SB 5ver

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post #2 of 12 (permalink) Old 10-14-2018, 04:10 AM
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Without going to full deletes be happy with what you got. It may take more than 1 refuel to see any mpg increases.

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post #3 of 12 (permalink) Old 10-14-2018, 04:47 AM Thread Starter
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I wish I would of saved $750, that is what would of made me happy with what I had.
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post #4 of 12 (permalink) Old 10-14-2018, 11:42 AM
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I suspect the “room for improvement” is significantly smaller than the older motors. The 7.3 was so poorly tuned from the factory that the DP-Tuner turned it into a new truck. Still, call Jody and discuss your concerns. He’s a great person and will help figure this out.


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2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM

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post #5 of 12 (permalink) Old 10-14-2018, 11:50 AM
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I have done a lot of mods to my trucks over the last 18 years, some did help with power, but very little mpg gain if any. The number one mod for better mpg when empty is to drive slower. When I am pulling the 5th wheel not much seems to help.
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post #6 of 12 (permalink) Old 10-14-2018, 01:36 PM
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I'll be the one to say it. Your first mistake was powerstrokehelp.com......
Fuel mileage is controlled by your right foot....
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post #7 of 12 (permalink) Old 11-07-2018, 09:29 AM
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I'll be the one to say it. Your first mistake was powerstrokehelp.com......

I know everyone likes to jump all over ole Bill on powerstrokehelp.com, but I've gleaned some useful info from his videos. However, he did upset me when he announced he was done with the 7.3. Bill or not, I still love my 97 7.3 (which I am now selling because I bought a '16 6.7).
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post #8 of 12 (permalink) Old 12-18-2018, 10:04 PM
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I have a’15 F350 6.7 and I have the SCT GTX. Has a street tune, performance, and a tow tune. You can also shop around and load a custom tune with it. If your using a tube for towing I would definitely recommend a EGT sensor too
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post #9 of 12 (permalink) Old 12-19-2018, 11:32 AM
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There is no way to increase H/P without adding more fuel to the mix. So you will not under any circumstance see any improvement in fuel millage with a tune. Not sure what the term street tune has to do with much. Your truck came with a street tune and a towing tune from the factory. So having ether one of those makes no sense at all. Money down the drain for sure. These are trucks not sports cars so I am not sure what people are doing changing the tune in there trucks. If you put your foot to the floor these trucks will spin the tires so having more power is a waste of money.
Deleting the pollution controls open another can of worms. I am not a fan of smelly diesel trucks nor do I want to see soot in the air. Not sure how people make there truck better by doing this. it cost lots of money then what? Oh I make so much more power and then they cry my truck broke or what does this code mean? I didn't have it before I did the tune. There is no way that a caned tune is correct for your truck in the first place. They are made for lots of trucks but may not be correct for your specific truck. Only way to make sure the tune you have is to take it to a shop with a dyno to make sure. Leaving the pollution controls on the truck is better for all of us and your truck.
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post #10 of 12 (permalink) Old 12-20-2018, 05:47 PM
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Yea....there's no MPG gains since May '15.

100k+ miles since the work.
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2015 F-350 CCLB PSD 4X4 3.55 ELD


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post #11 of 12 (permalink) Old 12-21-2018, 10:22 AM
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Yea....there's no MPG gains
When I 'tuned' my 97 7.3 (with an Edge programmer set to Safe Tow) all I was interested in was HP and torque. Stock, it wouldn't get out of its own way. Once tuned it was a brand new truck. There was the hype about fuel mileage but I knew I wasn't going to get more power and more mpg at the same time. We could now tow our RV with impunity, hauling up and over all the mountains out here in the west.

Mileage depended on wind and hills. I've gotten as high as 12.5 mpg (with a tail wind) and as lousy as 8 on a windy day with lots of hills. I don't really care about mileage. It's a truck and I bought it for towing.
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post #12 of 12 (permalink) Old 12-22-2018, 05:53 AM
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Yep. Plenty of people just want the HP/TQ gains. Some will find additional MPGs as a direct result. There are +'s and -'s to everything. Being smart about what one is doing gives the ability to know what to do and what not to do. Some people just read WAY too many magazines, some just have ZERO knowledge.
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