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speedometer and automatic locks

Discussion in 'Wrangler JK (2007-2017)' started by Pawpaw, Mar 27, 2017.

  1. Mar 27, 2017 at 3:38 PM
    #1
    Pawpaw

    #1
    Pawpaw [OP] Member

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    recently bought a 2017 JK and it has been lifted and 35" tires added. Speedometer is off by about 10mph at 60mph. how do I recalibrate them? also want to add electric locks, how big a job is this? thanks for any input.
     
    Pawpaw, Mar 27, 2017
    #1
  2. Mar 27, 2017 at 5:37 PM
    #2
    chris4x4

    #2
    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    chris4x4, Mar 27, 2017
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  3. Mar 27, 2017 at 6:08 PM
    #3
    aggrex

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    aggrex Well-Known Member

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    DE
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    Backcountry '16
    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    One option is the AEV ProCal Module which is used to correct the speedometer and gear ratio when larger tires are installed.
     
    aggrex, Mar 27, 2017
    #3
  4. Mar 27, 2017 at 6:44 PM
    #4
    OFFGRID

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    OFFGRID Well-Known Member

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    Peter
    Houston
    Vehicle:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    OFFGRID, Mar 27, 2017
    #4
  5. Mar 29, 2017 at 3:28 PM
    #5
    JEEP # 5

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    JEEP # 5 Well-Known Member

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    2014 BLACK & GREY
    Has 35 X 17 X 12 LT & a 4" RC lift, Smitty Bilt Nerf bars 3" tube
    I own the Super Chips programmer mentioned up top. A 2014 Wrangler Sport and 2003 Rubicon. 35" tires on my 14 and 33" tires on the wife's 03 Rubicon. I was able to get my jeep exact on the speedo and within 1.5 MPH at 60 on the Rubicon.
     
    JEEP # 5, Mar 29, 2017
    #5
  6. Mar 29, 2017 at 6:42 PM
    #6
    C2T

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    C2T Well-Known Member

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    Richard
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    2.5" AEV Dual Sport lift, 35" Treadwright Guard Dogs, Black Rock Wheels, AEV Front & Rear Bumpers with Tire Carrier, Fuel Caddy 10 gal. Aux. fuel tank, Warn 9.5ti, 125' synthetic winch line, front axle skid, 20" LED light bar , Bilstein Shocks, steel steering skidplate,
    Since it sounds like you just need speedo recalculation...many dealers will set that for you for free.

    I use the AEV procal.
     
    C2T, Mar 29, 2017
    #6
  7. Mar 31, 2017 at 5:37 AM
    #7
    Pawpaw

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    Pawpaw [OP] Member

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    thanks!
     
    Pawpaw, Mar 31, 2017
    #7
  8. Apr 4, 2017 at 1:35 PM
    #8
    w1lso

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    w1lso Member

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    Matt
    Vehicle:
    2012 Red Jeep Wrangler Unlimited Sport
    Steel Fender Flares, Warn Stubby Bumper, 35's Toyo ATII Extreme.
    Let us know how the locks work out when you do them. That's in my future as well.
     
    w1lso, Apr 4, 2017
    #8
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