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Rough Country Speedometer Calibrator

Discussion in '3rd Gen. Tacomas (2016+)' started by alwaysHI, Nov 5, 2018.

  1. Nov 6, 2018 at 12:09 PM
    #21
    Sungod

    Sungod Well-Known Member

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    Rough Country isn't exactly known for top tier quality.
     
    tallpilot, Hobbs and Tac0Tic0 like this.
  2. Nov 6, 2018 at 1:53 PM
    #22
    commbubba19

    commbubba19 Well-Known Member

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    it's a wheel speed sensor regardless of transmission.
     
  3. Nov 6, 2018 at 1:56 PM
    #23
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    Are you sure of that? How do you know?
     
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  4. Nov 6, 2018 at 3:11 PM
    #24
    Tac0Tic0

    Tac0Tic0 новий член

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    Prove it. Go unplug all 4 then go for a ride and see what happens
     
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  5. Nov 6, 2018 at 3:16 PM
    #25
    Tac0Tic0

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    So I just chatted with a RC “live chat” and it says it uses GPS to calibrate it :eek:
     
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  6. Nov 6, 2018 at 3:22 PM
    #26
    Tac0Tic0

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    4B1191EF-6B2A-4359-AC0C-07549048B08E.jpg CEF78B73-5241-4B63-B903-6E97C1B2C3A8.jpg
     
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  7. Nov 6, 2018 at 3:55 PM
    #27
    bulalo

    bulalo Well-Known Member

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    none at the moment
  8. Nov 6, 2018 at 4:25 PM
    #28
    alwaysHI

    alwaysHI [OP] Well-Known Member

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    What were they originally thinking you were inquiring about? Hahaha oh boy
     
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  9. Nov 6, 2018 at 5:50 PM
    #29
    Tac0Tic0

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  10. Nov 6, 2018 at 6:37 PM
    #30
    Hobbs

    Hobbs They don't call me Super Duper for nothin'!

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  11. Nov 6, 2018 at 6:44 PM
    #31
    MESO

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    Really? My hypertech was not available to purchase in CA.. at least when I purchased it
     
  12. Nov 6, 2018 at 6:45 PM
    #32
    Stocklocker

    Stocklocker Well-Known Member

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    Wheel speed sensors are thrown out of whack by larger tires. They count revolutions of a wheel of the outer diameter they expect (stock size tires), and use that the interpret speed. If you put a larger tire in you will have less revolutions over the same distance, so the wheel speed sensors that feed data to the ECU will feed it incorrect data regarding vehicle speed.

    Whether or not this is part of the shift-point calculation by the ECU is unknown to me, but the data coming off the wheel speed sensors on a truck with larger tires than stock will be scewed.
     
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  13. Nov 6, 2018 at 6:56 PM
    #33
    Tac0Tic0

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    I’m thinking it does not change the ecu data. But I’ll likely buy one and log it with techstream.

    I’ve been wanting to adjust my speedo for a long time.

    I’ll just blast them online for false advertising
     
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  14. Nov 6, 2018 at 8:14 PM
    #34
    Hobbs

    Hobbs They don't call me Super Duper for nothin'!

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    They shipped it to my door. Says right on the box "Emissions certified 50-state legal" (for what that's worth...). The Air Resources Board may disagree.
     
  15. Nov 7, 2018 at 6:23 AM
    #35
    commbubba19

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    correct - not arguing that.
     
  16. Nov 16, 2018 at 10:25 PM
    #36
    Brostjoe

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    Anyone with some reviews or feedback on this unit?
     
  17. Nov 17, 2018 at 3:56 AM
    #37
    MOC221_

    MOC221_ Not the Ginger

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    Some of you are ignoring the facts:

    Speed sensor 1.jpg Speed sensor 2.jpg speed sensor 3.jpg speed sensor 4.jpg Speed sensor 5.jpg Speed sensor 6.jpg
     
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  18. Nov 17, 2018 at 5:34 AM
    #38
    Tac0Tic0

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    I hooked mine up today. Will be posting shots of techstream next to gps data.
     
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  19. Nov 17, 2018 at 7:34 AM
    #39
    MOC221_

    MOC221_ Not the Ginger

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    Could you take shots of techstream veh speed PID as compared to cluster before the install ? <NVM, just re-read your post and you've already installed the sucker.
    I mean, I'm interested to see how accurate the speed calibrator is compared with GPS as well, but I suspect there will be a small difference in any case.

    There are some on TW that insist that the speed signal from the wheel sensors goes to the ECM first, and that any calibrator device will just change what the cluster shows. According to the SM, that's just not true.

    Edit: Without knowing exactly how the hypertech or rough country units connect behind the dash, I cannot say 100% if they will affect the signal that ends up going to the ECM as well as what you see on the cluster. Logically speaking, I can't see where the two being different values would be a good idea. I CAN say that the speed signal (stock) definitely passes THROUGH the cluster before it hits the ECM.
     
    Last edited: Nov 17, 2018
  20. Nov 17, 2018 at 9:02 AM
    #40
    Tac0Tic0

    Tac0Tic0 новий член

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    Can confirm, does not change what the ECU sees...

    Phone is the GPS signal speed

    https://youtu.be/ET7ec4PW7E4

    This one has the SP2 speed which is slightly faster but still not correct with GPS and the dash.

    https://youtu.be/uxJMVpBPa_A
     

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