Improving fuel mileage

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Buckfever316
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Improving fuel mileage

Post by Buckfever316 » Sun Jan 26, 2020 9:47 am

I'm looking for a way to improve my fuel mileage in my 16 PW. I found a tuner, PCR . Says it could increase mileage up to 8mpg and more power. I'm more interested in the mileage. Relatively cheap at $69.00, anyone have any experience with these tuners??

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Re: Improving fuel mileage

Post by Jack187 » Mon Jan 27, 2020 9:39 pm

Sounds like a scam. You couldn't get 8 mpg more out of these trucks unless you were having them towed.
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waldo
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Re: Improving fuel mileage

Post by waldo » Mon Jan 27, 2020 10:19 pm

LOL on getting another 8 mpg.

And you bought the wrong truck if you're concerned about fuel economy in any way, shape or form.
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Re: Improving fuel mileage

Post by DamageWagon » Mon Jan 27, 2020 11:26 pm

If you get a real tuner, like the Diablosport, and a custom tune, you might see 1mpg gain roughly.

$<400 doesn’t buy you a tuner and nothing buys you 8mpg

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Re: Improving fuel mileage

Post by RustyPW » Mon Jan 27, 2020 11:46 pm

I just got a Diablosport i3 from Hemifever. I have the custom 87 octane tune in now. It woke my PW up. :rockon: If I can keep my foot off the loud pedal. I picked up 2 mpg. Went from 9.7 to 11.7. :rockon: Once I burn through this tank. I'll log some data and send it back to Hemifever to do a custom 93 octane tune. :rockon:

8mpg is BS. And at $59.99. Stay away, far away. It sounds more like a pedal commander. It changes the sensitivity of the gas pedal.
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Re: Improving fuel mileage

Post by Mule » Tue Jan 28, 2020 2:07 am

If you wanted fuel economy, you should have bought a motorcycle. Leave the truck in teh driveway.

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Mule007
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Re: Improving fuel mileage

Post by Mule007 » Tue Jan 28, 2020 8:02 am

No way it will provide that kind of change. Good tuners + $400 imho, can make a difference but our results avg similar to RustyPW’s increased to +/- 11.3
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Additions: Frame mounted .188 DOM 3" steel rock rails low profile steps; 1.5” Skyjacker leveling kit; Bully Dog GT Platinum SRT-10 A-pillar pod mount programmable performance chip, monitor, tuner; Linex Platinum black armor bed & rock panel HD coating; matching Range Rider cab high fiberglass canopy; 2” Linex brush guard light bar w/ 4-KC Rally 400 Series 4” Halogen off road lights; S&B CAI; Flowmaster American Thunder cat back dual exhaust; Remote start; Hopkins Trailer Mate brake controller; Bearcat Pro 68XL CB radio; Mopar black accent fender flares; PW winch kit & remote control;
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Updates: Jasper Reman. Engine; Open Range All Terrain 35 x 12.5 x 17 MP3 10 ply E tires; McQuay-Norris Extreme ball joints (upper & lower); new fuel pump; 1 ton HEMI transmission cooler; new OEM radiator; front & rear drive U-joints; 180 amp alternator, Interstate Mega-tron 850 CCA HD battery; new water pump & serpentine belt; new Bilstein 5100 shocks & steering damper.

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Bill2014
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Re: Improving fuel mileage

Post by Bill2014 » Tue Jan 28, 2020 3:46 pm

When DiabloSport finally released support for our 6.4, I contacted them about potential Hp or fuel mileage gains. They had several dyno charts showing about 20 Peak Hp gains with 93 Octane on a stock truck, but indicated that any fuel mileage gain would typically be less than 1mpg no matter which tune I used. Maybe that has changed by now - but I would doubt it.

I actually get about 17 mpg in the summer on highway trips...
- if you don't hear the MDS drone, your sucking fuel! :poke:
It is possible to routinely get 16-17mpg unloaded, and here is how you can do it in order of biggest impact:
1) Only use Ethanol free gas (impact is more than 1 mpg)
2) Use summer blend gas (impact is about 1 mpg)
3) Keep your speed less than 70 mph (you lose more than 1 mpg at 75)
4) Run your stock tires at minimum 65psi
5) Don't use cruise unless you're on flat ground (I can get .5 mpg better)
5a) let your truck lose 5mph as you're cresting a hill
5b) maintain downhill momentum for hill ahead
6) Coast to slow down well ahead of time (wind resistance not compression)
7) Keep your windows closed (huge impact at higher speeds)
8) Draft large trucks

Back when I had the '13 with the 5.7, I could't get anywhere near the fuel mileage that i get now :(
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Buckfever316
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Re: Improving fuel mileage

Post by Buckfever316 » Tue Jan 28, 2020 4:33 pm

Thanks guys, just asked a question!!! New to owning a Power Wagon and I like to know my vehicle!!

SeppW
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Re: Improving fuel mileage

Post by SeppW » Tue Jan 28, 2020 5:09 pm

Buckfever316 wrote:
Tue Jan 28, 2020 4:33 pm
Thanks guys, just asked a question!!! New to owning a Power Wagon and I like to know my vehicle!!
Gas guzzler for sure. Might check some of the hypermiler forums. Those folks live to find ways to squeeze every mile out of a gallon of gas. I would imagine some one has developed techniques for trucks, maybe not a Power Wagon, but some sort of truck.

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Re: Improving fuel mileage

Post by Ducky's Dad » Sun Feb 02, 2020 2:06 pm

FWIW, I bought a DiabloSport long ago and could never get it to work on my '05 because my DSL internet connection was apparently too slow to update the software. Few years later I bought an Edge tuner because it was one of the few that I could still get in California after they tightened smog laws again. I have the Edge set on 87 econo tune and it significantly improves the driveability of the truck, probably because of transmission reprogramming. I still run 89 octane most of the year and 91 during the hottest part of the summer. Fuel mileage improved by maybe 2/10s of one mpg. On econo tune. Still worth it for the trans improvements and for the ability to display up to eight engine parameters on the Edge display.

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