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Rough Country Speedometer Calibrator

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

  1. Nov 5, 2018 at 10:47 PM
    #1
    alwaysHI

    alwaysHI [OP] Well-Known Member

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    Hey everyone,
    Today it was brought to my attention by a friend, that rough country released a inline speedometer calibrator for our 3rd gen Tacoma’s. I’m unsure if he saw it at SEMA this past week but here’s the link:

    https://www.roughcountry.com/speedometer-calibrator-90043.html

    Cheaper option than Hypertech. I’m in definite need of a calibrator from larger tires and regear. Just never could justify 240+ shipping to Hawaii for a hypertech.

    Any thoughts? Or any of you made it to SEMA and have any details on this?

    I’ve read hypertech reviews from TW stating to actually measure the tire, and leave gear ratios out of the equation. Just wondering if this product would be similar with the setup.

    Thanks
     
  2. Nov 6, 2018 at 12:08 AM
    #2
    fastmover34

    fastmover34 Well-Known Member

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    Seems legit, hopefully someone will post a review comparing it to the Hypertech unit
     
  3. Nov 6, 2018 at 12:34 AM
    #3
    sportracer829

    sportracer829 Taco Tuesdays... PShhh Taco Everyday!

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    Subd I wanna know too.
     
  4. Nov 6, 2018 at 2:43 AM
    #4
    bulalo

    bulalo Well-Known Member

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    Changes shift points based on tire diameter. Very promising. Unfortunately can’t be sold or used in California . Arggggg!
     
  5. Nov 6, 2018 at 3:27 AM
    #5
    Tac0Tic0

    Tac0Tic0 новий член

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    Very interesting that this says it changes the shift points....

    I just sent them an email to verify that it changes what the ECM sees.

    Guys on the ovtune thread said the hypertech unit does not change what the ECM sees.

    I’ll probably end up buying it, doing some logging with tech stream, then return it if it actually doesn’t change what the ECM gets.
     
    Last edited: Nov 6, 2018
    alwaysHI [OP] and bulalo like this.
  6. Nov 6, 2018 at 3:39 AM
    #6
    DarkFire989

    DarkFire989 Well-Known Member

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    Hitting up my buddy who is a RC dealer. Might give this one a shot.
     
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  7. Nov 6, 2018 at 3:42 AM
    #7
    Tac0Tic0

    Tac0Tic0 новий член

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    Group buy!
     
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  8. Nov 6, 2018 at 3:46 AM
    #8
    DarkFire989

    DarkFire989 Well-Known Member

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    I could ask....
     
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  9. Nov 6, 2018 at 5:58 AM
    #9
    commbubba19

    commbubba19 Well-Known Member

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    I don't see how this does anything besides updating the cluster display. The ECU still sees the speed from the wheel sensors first.
     
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  10. Nov 6, 2018 at 6:02 AM
    #10
    MCDavis

    MCDavis Taco life is over. Full time 4wd for the win.

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    Appears to install in the same manner as the HyperTech module, so I'm unclear as to how this can update the ECM.
     
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  11. Nov 6, 2018 at 6:03 AM
    #11
    MESO

    MESO Major Modder Vendor

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    I agree. It T’s into the same spot as the hypertech. Similar small little black box module too
     
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  12. Nov 6, 2018 at 11:26 AM
    #12
    alwaysHI

    alwaysHI [OP] Well-Known Member

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    Just take it out prior to inspection lol

    I don’t understand that part either. But a cheaper alternative to hypertech, yet achieve the same goal is nice for me haha. My mpg data per trip is affected since everything is off. My SR5 came stock with 245’s and I’m on 285’s now with 4.88’s
     
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  13. Nov 6, 2018 at 11:29 AM
    #13
    commbubba19

    commbubba19 Well-Known Member

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    gears don't effect the speedometer display in the cluster, only tire height.
     
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  14. Nov 6, 2018 at 11:42 AM
    #14
    Hobbs

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    Are you sure about that??
     
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  15. Nov 6, 2018 at 11:43 AM
    #15
    alwaysHI

    alwaysHI [OP] Well-Known Member

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    Ahh, thanks lol
     
  16. Nov 6, 2018 at 11:43 AM
    #16
    MESO

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    Stick it to da man!
     
  17. Nov 6, 2018 at 11:52 AM
    #17
    Tac0Tic0

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    I got a feeling this thing doesn’t touch the ECU..
     
  18. Nov 6, 2018 at 11:52 AM
    #18
    Taconator_

    Taconator_ Well-Known Member

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    Definitely interesting
     
  19. Nov 6, 2018 at 12:01 PM
    #19
    cemented

    cemented Well-Known Member

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    The install instructions are the exact same as the hypertech, they even use a hypertech module in the first pic #730123. That being said, the pic at the top of the page looks nothing like the hypertech other than the module. Something seems a little fishy.
     
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  20. Nov 6, 2018 at 12:02 PM
    #20
    EatSleepTacos

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    Assuming third gens are the same as second gens, gear ratio does affect the speedometer on manual transmissions. Autos read speed based off ABS sensors and manuals based off driveshaft revolutions.

    I just did a search to see if I could find an answer one way or another but didn't come up with anything 3rd gen specific.
     
    xxTacocaTxx likes this.

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