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Old 02-21-2018, 08:32 AM   #1
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Tuners

Looking for experiences/recommendations of tuners for those hauling 5th wheels. I've got a 2018 Seismic and she's heavy. I'll be executing orders from coast to coast this summer and am looking to increase mileage and/or performance of my 2015 Duramax 3500 dually. I'll also most likely be investing in a fuel tank for the bed, to extend mileage.

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Old 02-21-2018, 10:43 AM   #2
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I used this tuner. Worked great for me. Have 2004 duramax.
EFILive AutoCal Duramax Level 1 Mild Max LB7 LLY LBZ LMM LML - ATPTrucks
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Old 02-21-2018, 11:24 AM   #3
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Tuners

Be careful tuning with heavy towing. The Duramax Allison is a great combo. The Allison is a smart heavy duty trans and will tow heavy loads at stock power levels all day long. Problem is when you turn up the power and donít makes upgrades to the trans. Talk to ATP noted above. They have a heavy tow tune. I run that now on my 2500.

Much more than a heavy tow tune and you will need to upgrade some internals in your trans...
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Old 02-21-2018, 06:08 PM   #4
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DP-Tuner has a variety of different Tuners. I had one a 96 F350 7.3. Not sure how they are up to speed on the newer trucks. I think they are out of Tennessee. I now have a 2016 Silverado with a Duramax.
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Old 02-21-2018, 06:21 PM   #5
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I have a DP-Tuner Heavy Tow tune on my 2015 F350. You could contact Jody to see what he has for your truck. https://www.dp-tuner.com/contact-office.html
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Old 02-21-2018, 06:40 PM   #6
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Quote:
Originally Posted by SkiSmuggs View Post
I have a DP-Tuner Heavy Tow tune on my 2015 F350. You could contact Jody to see what he has for your truck. https://www.dp-tuner.com/contact-office.html
How many mpg's did you gain?
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Old 02-21-2018, 07:27 PM   #7
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How many mpg's did you gain?
It's hard to say because there are too many variables involved. What I did get is better driving both hooked up and unhooked, plus DPF regenerations happen less often.
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Old 02-21-2018, 07:53 PM   #8
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MY DP-Tuner had a Economy Mode and your mileage would be plus 10-15% . You can tell them what your expectations are and what you are trying to accomplish, such as, towing versus high performance, more horsepower.
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Old 02-22-2018, 07:01 AM   #9
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The best way to increase mileage for free is back off the speed and jack rabbit starts. Yeah, I know people behind you make some feel like they have to "keep up", but you aren't driving a sports car.

Slow down and enjoy the ride. My truck is bone stock and will stay that way.
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Old 02-22-2018, 08:07 AM   #10
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Stock is ok. But a lot of people thank of their trucks like a lot of people on this site thank of their campers. So if there is a way to make it better, why not.
If you use a good EFIlive tuner they can do wonders safely with no other mods. But as always there are other things that will help. One of the things I would highly recommend is an exhaust temperature gauge even if stock. Other things are a larger exhaust, cold air intake, ect.
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