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Thread: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

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    Double R Diesel's Avatar

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    Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Guys, I get 16mpg to 18mpg in my Cummins trucks. What do you guys get? I would love to hear your thoughts on this.



    God bless,
    Ray - Double R Diesel

    The Cummins Whisperer! John 3:16, Romans 10:9-10...Tuning for the Heart and Soul.


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    Big Daddy! IGOTACUMMINS's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Another great topic!

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    lcarrasco's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    14.5 avg mostly city. 35x12.0 toyo mt with 40 psi front and 35 psi back. 5" turbo back exhaust. I can get 18-20 mpg on hwy if im taking a couple hr trip


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    Basic Member rtdrags's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    11 to 12 mpg on ultra box tunes turned all the way up (200 hp). I try to stay easy on the right foot to help with the mpg though. I would hate to see what it's like if I constantly had my foot into it. Lol

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    Basic Member rtdrags's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Mine are hand calculated too

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  9. Top Of Page | #6
    Basic Member rtdrags's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Does dropping ur tires psi help ur fuel economy?

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  11. Top Of Page | #7
    watersupply189's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    I'm averaging between 16-18 mpg also.


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    2016 Ram 3500 4x4 Laramie Crew Cab
    Cummins, G56, Rough Country Leveling, 35W HID fog lights,35W HID headlights, Lund Attitude Step Bars Sprayed Line-X, Window Vent Visors from EGR, LED Cargo/License plate lights, Windows Tinted, DRL's Activated, 35x12.50 18 Nitto Terra Grappler G2, Fuel Vapor Wheels Matte Black w/ Dark Tint, MM3 Tuned by Double R Diesel EGRless w/Emission Compliant
    2015 Jeep Grand Cherokee Limited 4x4
    Past- 2014 Ram 1500 4x4 Lone-Star Eco Diesel

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  13. Top Of Page | #8
    lcarrasco's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Quote Originally Posted by rtdrags View Post
    Does dropping ur tires psi help ur fuel economy?

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    Yup


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  15. Top Of Page | #9
    lcarrasco's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Quote Originally Posted by rtdrags View Post
    Does dropping ur tires psi help ur fuel economy?

    Sent from my LG-H900 using Tapatalk
    No. My bad. I read wrong. It makes it worst


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  17. Top Of Page | #10
    Basic Member rtdrags's Avatar

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    Re: Diesel Cummins Fuel Economy: Real World Economy (Hand Calculated)

    Lol I was gonna say I'm running 65 psi in nitro mud grapplers and I think I'm pretty low on the mpg scale

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