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Maxed out at 133KMH - 83MPH

Discussion in '3rd Gen. Tacomas (2016+)' started by SandyHouston, Jul 22, 2021.

  1. Jul 22, 2021 at 9:19 AM
    #1
    SandyHouston

    SandyHouston [OP] Member

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    Hey everyone,

    I have a 2020 OR, I have regeared to 5.29s and also added the OV Tune to compliment the 5.29s. I knew I would loose top end, but I didn't think this much would be lost. As you can see, I am maxed out at 133km/h at 3200 RPMs 6th gear. I tried to get more out of it, but it would just rev and the speedometer would not get any higher. My question to you is, is this a tune issue or is this a gear issue or a combination of both? Any information would be greatly appreciated!
    IMG_2032.jpg
     
  2. Jul 22, 2021 at 9:22 AM
    #2
    coopcooper

    coopcooper certified youtube mechanic

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    Sounds like a tune issue cause you should be able to rev out 6th no problem regardless of what gears you have
     
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  3. Jul 22, 2021 at 9:23 AM
    #3
    Dank Donkeh Luvver

    Dank Donkeh Luvver Well-Known Member

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    It's because of the gears. You need to use vFtuner to reset the truck's max speed. If you tuned yourself, it's really simple. If someone else tuned your truck, they should have made the adjustment for you, and should correct it free of charge.


    I have not geared my truck, although I have tuned a few regeared trucks. My basic understanding the speed limiter/gearing relationship is this:

    Stock gear size = 3.90
    New gear size = 5.29
    Stock max speed (based on stock tires) = 112mph

    3.90 / 5.29 * 112 = 82.57 mph is your new max speed because the truck "thinks" it's going 112.
     
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  4. Jul 22, 2021 at 9:23 AM
    #4
    CanadaToy

    CanadaToy Well-Known Member

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    Read thru the OV tune thread, there are fixes.

    Did you tune yourself, or get someone else? You need the specific 5.29 tune.
     
  5. Jul 22, 2021 at 9:24 AM
    #5
    tonered

    tonered tacorider

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    Weirdly, the speed limiter is sensed on the AT output shaft speed. An easy edit or 5.29 vF Tune will correct that.
     
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  6. Jul 22, 2021 at 9:25 AM
    #6
    Knute

    Knute Well-Known Member

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    Your fishbowl needs filling.......
     
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  7. Jul 22, 2021 at 9:26 AM
    #7
    SandyHouston

    SandyHouston [OP] Member

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    Thanks for your reply. This has been tuned by Matthew Wilson at Orange Virus tuning. This has the 5.29 tuning pack with 33's on it. Does anyone know the step by step on how to reset the max speed? I purchased the kit to tune myself, I just need a little help on a guide to get this done. Must go faster. Thanks!
     
  8. Jul 22, 2021 at 9:27 AM
    #8
    SandyHouston

    SandyHouston [OP] Member

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    I tuned myself using the tunes from OV. This has a specific tune for the 5.29 gears with 33 tires.
     
  9. Jul 22, 2021 at 9:29 AM
    #9
    SandyHouston

    SandyHouston [OP] Member

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    As per my post, my truck has an OV Tune specific for the 5.29 gears. I am trying to understand how this was missed.
     
  10. Jul 22, 2021 at 9:29 AM
    #10
    GOTSAND?18

    GOTSAND?18 Well-Known Member

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    If you can hit 88mph you can go back in time and never install the tune .
     
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  11. Jul 22, 2021 at 9:30 AM
    #11
    tonered

    tonered tacorider

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    That is weird. The 5.29 tune should have you sorted, but the easy way is to edit your tune like so:
    upload_2021-7-22_9-30-45.jpg
     
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  12. Jul 22, 2021 at 9:31 AM
    #12
    tonered

    tonered tacorider

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    Agreed, but the edit in the post above is very easy. I'd use your 5.29 tune as the starting point.
     
  13. Jul 22, 2021 at 9:34 AM
    #13
    Dank Donkeh Luvver

    Dank Donkeh Luvver Well-Known Member

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    If I recall correctly, they didn't "miss" this. They had reasons to NOT change the global speed limiter - most likely liability related.
     
  14. Jul 22, 2021 at 9:36 AM
    #14
    PiryongS

    PiryongS Well-Known Member

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    Great Scott!!!
     
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  15. Jul 22, 2021 at 9:36 AM
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    SandyHouston

    SandyHouston [OP] Member

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    Ok, so riddle me this then. What is the max speed reached without tuning or gearing, complete stock, for a 3rd gen Tacoma before the governor kicks in?
     
  16. Jul 22, 2021 at 9:37 AM
    #16
    coopcooper

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    110mph give or take
     
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  17. Jul 22, 2021 at 9:38 AM
    #17
    tonered

    tonered tacorider

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    Not quite. The 5.29 tune allowed the speed limiter to go back to the Stock setting. Something like 108? It was said that the drag limit is right around there also.
     
  18. Jul 22, 2021 at 9:39 AM
    #18
    SandyHouston

    SandyHouston [OP] Member

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    Thanks for that. So for the record, I will set my max speed in the tune to 110 mph or for us canucks, 177km/h. Just to clear up any liability concerns. (We don't know how to sue in Canada, btw.)
     
  19. Jul 22, 2021 at 9:39 AM
    #19
    coopcooper

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    or just remove the limiter
     
  20. Jul 22, 2021 at 9:40 AM
    #20
    tonered

    tonered tacorider

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    Most all values in the vF software are Science Units.
     

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