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Mileage boost w/tonneau?

Discussion in 'Technical Chat' started by gravedgr, Feb 9, 2014.

  1. Feb 9, 2014 at 9:26 PM
    #1
    gravedgr

    #1
    gravedgr [OP] dirty Ford driver

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    Not sure where to put this, but was wondering us there is an appreciable mileage increase with a tonneau installed. If so, roughly how much?

    Thanks!
     
    gravedgr, Feb 9, 2014
    #1
  2. Feb 9, 2014 at 9:27 PM
    #2
    Rich91710

    #2
    Rich91710 Well-Known Member

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    I've seen no difference between tonneau or cap on 3 different trucks.
     
    Rich91710, Feb 9, 2014
    #2
  3. Feb 9, 2014 at 10:19 PM
    #3
    gravedgr

    #3
    gravedgr [OP] dirty Ford driver

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    Method Racing Mesh wheels (17x8.5), Cooper ST Maxx tires (285/70/17), Toytec Ultimate lift (3"), Wet Okole seat covers, WT mats, Gemtex mirror, CF stubby antenna, scoop hood, painted grill surround, SOS bumper, SOS bed rack, Tepui Autana RTT, Engo 10k winch, bed lights, under hood lights, diff breather, 12v bed socket, 31M battery + battery monitor
    Do you have any comparison of tonneau vs. open bed or cap vs. open bed?
     
    gravedgr, Feb 9, 2014
    #3
  4. Feb 9, 2014 at 10:22 PM
    #4
    Fightnfire

    #4
    Fightnfire Recklessly tired

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    Starting over with a new GMC AT4 Satin Steel Metallic Softopper, Bilstein 5100's @ 1.75 in the front, TSB Rear, 17x8.5 Lvl 8 Guardians, 265/70-17 Falken Wildpeak AT3W, Scooped, Anytime fog mod, Osram Nightbreakers, LED Interior lights, Debadged, Painted valance, Removed rear head rests, De-flapped, Hidden Hitch installed, Weather Techs, Flyzeye'd A/W/A, Cover Kings.
    Open bed should give you the best MPG or at least not worse then a cap. You have to consider the weight of a cap.
     
    Fightnfire, Feb 9, 2014
    #4
  5. Feb 9, 2014 at 10:30 PM
    #5
    Rich91710

    #5
    Rich91710 Well-Known Member

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    http://personal.linkline.com/rlockyer/TundraGas.xls

    Somewhere around May of 2003 I put a hard tonneau on it.
    "Total MPG" is a roughly 90 day rolling average.
     
    Rich91710, Feb 9, 2014
    #5
  6. Feb 10, 2014 at 4:54 AM
    #6
    SpacemanSpiff

    #6
    SpacemanSpiff Well-Known Member

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    No effect. Hell, even mythbusters proved it false... :laughing:
     
    SpacemanSpiff, Feb 10, 2014
    #6
  7. Feb 10, 2014 at 5:53 AM
    #7
    gravedgr

    #7
    gravedgr [OP] dirty Ford driver

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    Method Racing Mesh wheels (17x8.5), Cooper ST Maxx tires (285/70/17), Toytec Ultimate lift (3"), Wet Okole seat covers, WT mats, Gemtex mirror, CF stubby antenna, scoop hood, painted grill surround, SOS bumper, SOS bed rack, Tepui Autana RTT, Engo 10k winch, bed lights, under hood lights, diff breather, 12v bed socket, 31M battery + battery monitor
    Good call, I didn't think about that.

    LOL, okay. I guess I can move it down my priorities list a bit. :D
     
    gravedgr, Feb 10, 2014
    #7

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