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2016 OVTune Tacoma 3.5L Manual Transmission / Engine ECU Reflash

Discussion in '3rd Gen. Tacomas (2016+)' started by OVTune, Oct 18, 2017.

  1. Jun 11, 2019 at 10:21 AM
    Melmantaco

    Melmantaco Well-Known Member

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    While blunt i see nothing negative about my response. Your confusion does not imply im being rude. If you dont understand then use the google and research the topic.
     
  2. Jun 11, 2019 at 10:50 AM
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    OVT 1.05 FOB 91
    Uh... this isn't the dev thread guys.

    I don't wanna take hot showers with any of you, but I try to be friendly when possible.
     
    iexc, Tacoma816, nxcess and 5 others like this.
  3. Jun 11, 2019 at 10:51 AM
    tonered

    tonered tacorider

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    1.05B 87, Functional Skewp, 7r41lbr34k3r knob, Debadge, Dechrome, MeSo switch panel and V4s
    ^^^^ This.
     
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  4. Jun 11, 2019 at 10:57 AM
    Melmantaco

    Melmantaco Well-Known Member

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    Point taken, i be good
     
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  5. Jun 11, 2019 at 12:12 PM
    OVTune

    OVTune [OP] Well-Known Member

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    Inconsistent throttle has already been figured out and a patch is under way for that.
    Rev hang patch is also being worked on. Seat time in a MT would be lovely and something we definitely need, but before that point we really want to wrap up all of our 2.0 code, throw it in the truck, and then finely tune it. Just like the AT folks, I don't want to try to tune around the stock ECUs limitations, so I'm writing in my own stuff.
     
    02Duck, iexc, MOC221_ and 5 others like this.
  6. Jun 11, 2019 at 12:21 PM
    Melmantaco

    Melmantaco Well-Known Member

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    Thank you for that insite! This is exciting. i sometimes wonder if the throttle for the manual could at least have a predictable throttle when coming from a stop. Is it in the clutch position, throttle control, torque demand maybe? Possibly a cold start limp mode? Once warmed up its becomes more drivable but not perfect. Ive bypassed my accumulator and that has helped but truck still when warm feels like it seems to skip the rpm that works best for clutch engagement. Ie. Apply throttle and it will rather quickly rev past what you are trying for so then you end up backing off as you release the clutch. Not slow but controlled throttle engagement for the that point of operation would make this truck drive like a fine oiled eaton fuller. When throttle response is too aggressiveness while releasing the clutch when trying to be gentle causes the truck to buck, clunk, ujoint getting beat on. This is why i say it is so vital for you to experience this on the manual trans. I absolutely love the power and the torque management. This truck is really impressive all factors considered. I just really want to get the ability to gain slow control.....reverse just amplifies all this.
    For the record i am licensed to drive almost anything on wheels and have a lot of experience with clutch management. I have full confidence that your work is 100% safe and worth every penny having worked with your tunes for approximately 9 months now. For that i thank you. Either way its still 100% better than stock tuning.
    For all i know youve figured this out already and you're still putting everything into fruition....
     
    Last edited: Jun 11, 2019 at 12:45 PM
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  7. Jun 11, 2019 at 12:49 PM
    OVTune

    OVTune [OP] Well-Known Member

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    I Think I may know what you are seeing / feeling at low throttle control. Give me a moment I'll show you a few tables that could be the culprit
     
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  8. Jun 11, 2019 at 12:59 PM
    OVTune

    OVTune [OP] Well-Known Member

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    So, putting aside the multiple 3D tables that create the "demand" requested.. (these are stock tables)

    here is your base throttle scaling. (basically X volt = Y angle)
    It's not a smooth scale at all.
    scale.jpg

    Then, you have independent gear throttle limit tables (angle to accel angle)
    limit.jpg



    These tables are referenced then modified by multiple 3D tables at the same time, but the "base" (scale, cal) isn't really "great" on it's own.
     
    iexc, MOC221_, Melmantaco and 2 others like this.
  9. Jun 11, 2019 at 1:12 PM
    Melmantaco

    Melmantaco Well-Known Member

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    Is there plan to refine?
     
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  10. Jun 11, 2019 at 1:19 PM
    tonered

    tonered tacorider

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    Gawd. Is it me, or does that seem dumb?

    What would life be like if the first graph was linear other than the first couple points and the second just identical for all gears and neutral?

    I suppose that I just dream of old multiport EFIs. Or, the simple throttle cam profile on my bike.
     
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  11. Jun 11, 2019 at 1:24 PM
    4x4Runner

    4x4Runner Now with more Oi Vey! Moderator

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    Because of the very last comment you made in your post
     
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  12. Jun 11, 2019 at 1:28 PM
    sea2summit

    sea2summit Member

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    That's why I'm here...
    All of this^

    My first comment to the dealer when I drove a Gen 3 two years ago was "my 4-cyl had way more get up and go, this can't weigh that much more". If I didn't love the truck so much and if they didn't have the longevity/resale they do the throttle response would have ended it for me right there.
     
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  13. Jun 11, 2019 at 1:37 PM
    tonered

    tonered tacorider

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    1.05B 87, Functional Skewp, 7r41lbr34k3r knob, Debadge, Dechrome, MeSo switch panel and V4s
    This truck with the MT set the hook immediately. It has been fun to work through the issues.

    I'm getting pretty jazzed for 2.0.
     
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  14. Jun 11, 2019 at 1:42 PM
    Shellshock

    Shellshock Guy who drives a lot

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    I'm gonna go do my ADM so I'm all ready for 2.0 lol
     
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  15. Jun 11, 2019 at 1:48 PM
    tonered

    tonered tacorider

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    Get on that! :D
     
  16. Jun 11, 2019 at 4:17 PM
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    What cha waiting for?
     
  17. Jun 11, 2019 at 4:33 PM
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    Thanks for the update Mat, exciting news!

    I'm not sure if anyone has mentioned this before, but here goes -

    From day one, my truck has been like a limp dick when trying to get moving on a reasonably steep incline. Slip the clutch, add throttle and start moving up... then just when you get the clutch out all the way and you want to start accelerating, the engine seems very "lazy" and then will lurch after the RPM comes up a few hundred. I would think with 4.30 axles and our 1st gear ratio, we have enough of an advantage that the engine shouldn't have trouble with this. To me it feels artificial, and could indeed be related to the tables you spoke of. I'm not speaking of mashing the gas, btw.
    Removing the accumulator from the clutch hydraulic circuit has helped in this scenario, because at least now I know exactly when the damn thing will engage.
     
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  18. Jun 11, 2019 at 4:34 PM
    Shellshock

    Shellshock Guy who drives a lot

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    :turtleride:

    Mostly just been lazy lol maybe I’ll tackle it this weekend
     
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  19. Jun 11, 2019 at 4:34 PM
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    Woot!
     
  20. Jun 12, 2019 at 2:57 AM
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    CAN I ASSUME YOU'VE THROWN MOST OF THIS ASS-HATTERY SHYTE IN THE BIT BUCKET???

    LOL, :annoyed:
     
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