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Compromised Gas Mileage with Lift

Discussion in 'Lifted' started by HoustonChiver, Jan 11, 2021.

  1. HoustonChiver

    HoustonChiver Junior Member

    Age:
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    Joined:
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    Location:
    Seabrook, TX
    Ram Year:
    2020
    Engine:
    Hemi 5.7
    Nitto Ridge Grapplers
     
    CAG CheechDogg likes this.
  2. TOTALCHAOS69

    TOTALCHAOS69 Junior Member

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    28
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    Location:
    Trumann, AR 72472
    Ram Year:
    2008
    Engine:
    Hemi 5.7
    The 305/55-20 Mud Claws I had put on a few weeks ago weighed 70-75 pounds each. Don’t look like they’d be so heavy until you grab one as you’re walking.... then you’re NOT WALKING anymore. :emotions133:
     
    kolya and HoustonChiver like this.
  3. olyelr

    olyelr Senior Member

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    Location:
    Kewadin MI
    Ram Year:
    2016
    Engine:
    6.4
    I went from a completely stock truck, changed the tires out to a bit more aggressive tire (goodyear ultra terrains, stock size) and lost a solid 1 (if not 2) mpg. Stock size tire, still p-rated, just a bit more aggressive...ate up a mile or two per gallon.

    Its just bound to happen.
     
  4. slbenz600

    slbenz600 Junior Member

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    Joined:
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    Location:
    La Verkin
    Ram Year:
    2015
    Engine:
    6.4 L
    I have 2015 Ram 2500 4X4 6.4L Hemi. When I ask these people about better mileage the response was "if you want to haul or tow mileage per gallon isn't an option". That is a big lie, I am getting 18 to 20 mpg empty all day long. I done a bunch of research on the old Hemi to the new to figure out the reason the older Hemi's got higher mpg. One of the big things Ram has done is choke this engine down so bad there is no wonder why. The back pressure is so bad it's building up so much exhaust it's choking it's self.
    The back pressure needs to be reduced and I have found two different ways both require to discard the "Y" pipe, in place of the "Y" pipe install an "X" pipe or install 3 inch pipes from cat's back to a Flow master muffler that is two 3 inch pipes in and out the "X" is built internal to the muffler.
    My truck not only increased mpg but hp and torque. Before doing this it didn't have the power to pass anything it towed and hauled but was a big POS. know if I nail the throttle it goes sound is awesome and I couldn't ask for better results.
    The one problem you will have most muffler shops say that you need that back pressure so most won't due a true dual exhaust system one of the reasons is they are not smart enough to no that the cat's stay there your either install an "X" pipe or Muffler with built in "X" pipe.
    Enjoy your new truck
     
    Hardracer likes this.
  5. Fireman48

    Fireman48 Senior Member

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    Location:
    Sc
    Ram Year:
    2019 New body style
    Engine:
    5.7. HEMI
    I have 6" lift on 35" tires MT but not super aggressive, 12" wheel and I get 15.5 recalibrated. I eas in the upper 16mpg before all of it. My mikeage is pretty mixed. Now if I ran 80 plus and heavy foot I'll dip into the upper 13's.
    I run a Pulsar mostly stock w MDS on.
     
  6. BWL

    BWL Embrace the skeptisism

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    Ram Year:
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    Engine:
    hemi 5.7
    Lift will effect your hwy mpg more than city because the extra wind drag comes into effect. Tires will have greater effect city driving trying to get a heavier rotating mass going over and over. Wider tires also have more drag, which effects all. There's a reason high fuel economy vehicles sit low and have skinny low resistance tires. I have nitto ridge grapples. I like them, but they're heavy and I notice an mpg drop when they're on even with my mostly highway miles. I wouldn't trust any intakes, tunes etc to gain you mpg on a gas engine. The manufacturers spend countless dollars trying squeeze out every mpg they can.
     
    Last edited: Jan 18, 2021 at 10:04 AM
  7. RaptorHD

    RaptorHD Member

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    Location:
    South Carolina
    Ram Year:
    2019 2500HD
    Engine:
    6.7 Cummins
    I never could understand the whole "Big tire" thing,,makes no sense especially if its a road warrior! Larger tires do not help you unless you are driving in alot of loose dirt/rock/sand crawling, we know there are alot of rocks to crawl over on the way to work! If your in Mud, a skinny tire is best, the only way a large wide tire helps in mud is if you have alot of HP and rpm's to skip over the deep mud.

    Since I drive mostly on the streets, I have a stock lift, I don't race off road anymore and I work my truck so I have commercial tires (33") same size as stock.

    I don't get trucks with gas engines anymore because of the efficiency of them, not just fuel, but power and torque which matters to me. I do have a few very high HP cars but then I race them...

    To get mileage from an engine there is alot to think about, gearing, tire mass, vehicle weight and aerodynamics. Common sense would tell you that bigger tires, lower aerodynamics factor would affect your MPG's. You want to get your mileage back? get skinnier tires and drop that truck back down!
    You would also need to make your engine as fuel efficient as possible, but that is another story.
     
  8. cash4acres

    cash4acres Senior Member

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    Location:
    Newport Beach CA
    Ram Year:
    2015
    Engine:
    6.7L,660ftLbs=G56 Manual 6 speed
    Should have bought a Cummins.

    31mpgTampa2Naples2Miami
    28mpgsTampa2Orlando
    29mpgsTampa2Miami
    29mpgsFtMeyrs2Miami
    32mpgsKingman2Phoenix *
    NewOil 10-60w pennzoil platinum plus premium oil
    32mpgsSanBerna2LasVegas
    31mpgs MorroBay2SanFram
    30mpgsVegas2Laughlin
    31mpgsEugene2Portland
    27mpgsVegas2Portland
    30mpgsDallas2BullHeadCity
    April 21-24,2020
    26mpgVegas2Texas coldair
    29mpgSanAntonio2Houston
    28mpgElPadeo2SanAntonio
    30mpgVegas2Phoenix
    26mpgMississippi2Vegas
    30mpgPortland2AmarilloTx
    27mpgTacoma2Portland
    26mpgOhio2ldaho
    24mpgPennsylvania 2NC
    27mpgMephis2Pensacola
    28mpgGreenBay2Chicago
    27mpgIndianapolis 2GrRap
    28mpgJacksonville 2 WaDC
    31mpg Ok City to Dallas Tx
    27mpg Houston to El Paso Tx
    27-33mpgs freeway 60mph
    18-20mpgs city driving 10-18mpg off road
    10-18mpgs tow 6kLbs Boat

    2015 2500 Tradesman Cummins 6spd 4x4 4door Deleted 4" pipe, KN flat air filter camper shell EdgeCts2
    Baja front Cow Deer Grill
    3 light bars =970watts front
    1st responderCERT 10k lbs. TransforceHt 2757018 tires
    Deleted PFdiesel.com @78k
    25-32mpgs freeway
    15-20city,
    10-15 off road

    Efficiency is measured TonXMiles per gallon used by scientist in the diesel truck industry.5.2tonsX28+mpg= 146TonMile/gallon

    Toyota Prius is 3200=1.6tX50 mpg=80TonMile/gallon

    Railroads 500ton mile/gallon

    18wheeler 7x20=140tonMile

    6 way MPGs calculated=
    1-RAM computer
    2-Garmin gps
    3-Google maps gps
    4-USGS maps Android
    5-AAA maps Android
    6-hand=4 semesters calculus

    Cummins ECONOMY TIPS
    1:Speed 55-65 mph
    2: Close Windows
    3: No items on top of car
    4: Make truck aerodynamic
    5: Inflate tires maximum 80?
    6: High rear end gearing3.42
    7: Factory tall tires 70s
    8: 5-40w Synthetic Oil
    9: avoid 4x4 driving
    10: Remove excessive weight
    11: Fuel is heavy too
    12: Plan journey wisely
    13: warm up engine
    14: clean outside
    15: Avoid RAIN
    16: No aggressive driving
    17: Don't over-rev.
    18: Gear fast, slow accelerate
    19: Avoid idling.
    20: Overdrive & cruise control
    21: Ele&AC worsens MPG
    22: Exploit cruising down hill
    23: Avoid a complete stop
    24: red>roll in neutral gear
    25: Tune engine to low HP
    26: Change oil regularly.
    27: Replace air filters asap
    33: Leave early Family drama
    34 constant Mph=Mpg
    36: avoid drama & stress
    37 Park in shade
    38 cruz2 save braking
    39: Forced induction =MPG
    41:Rough asphalt tire wear7%
    42:Use brakes to slow down
    43change fuel filters often
    44change power train oils
    45avoid wider tires
    46avoid jacking truck height
    47used tires =better MPGs
    48TenDegrees=HalfMileMpg
    49 rpm 1400-1600

    Obama Diesel Exhaust Cooker warranty expired 80k. 3rd Cooker by 75K so @78k I deleted.
    Saving fuel & costs 10c mile = $1000/10,000 miles
    Or $10,000/100k miles
    So if I deleted, 300,000 = $30,000 fuel & cost savings 2016to2020

    Some attack so I fight back. 151IQ. Top1%USA. 780+ escrows 750+ text books 4 semesters calculus. On 6th passport. 8 states gun Ccw permits. 199 court cases. Own 8000+ acres California no loans since 1991. No drug's smoking or booz. American Red Cross VIP blood donor card since 1991. fico 826+ IMG_20201220_075430252_HDR.jpg
     
  9. keisur

    keisur Junior Member

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    Location:
    Cypress, TX
    Ram Year:
    2020
    Engine:
    5.7L Hemi
    37's and 6" lift and I'm averaging 17 at 65. You probably need to calibrate your speedometer.

    20210118_195759.jpg
     
  10. AC Davidson

    AC Davidson Junior Member

    Age:
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    Joined:
    Aug 2, 2019
    Location:
    Summerville SC
    Ram Year:
    2018
    Engine:
    Hemi 6.4
    I have a pulsar tuner installed to recalibrate my speedo and added performance. The MPG with the tuner is around 13.5. It’s not bad but not great. The MPG is probably the best it’s going to get because of the 37s I have.
     

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