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OVTune 3URFE Tundra ECU Tune Development Thread

Discussion in '3rd Gen Tundras (2014+)' started by OVTune, Apr 25, 2019.

  1. Oct 2, 2020 at 12:44 PM
    #4891
    Wynnded

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  2. Oct 2, 2020 at 3:53 PM
    #4892
    Jboyorak

    Jboyorak New Member

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    Will you be providing base files in the future like the Tacomas?
     
  3. Oct 4, 2020 at 6:35 AM
    #4893
    Wynnded

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    ;)
     
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  4. Oct 4, 2020 at 7:35 AM
    #4894
    mzim

    mzim New Member

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    Gearlock question. Driving down the road, shift into S4, drive along some more, come to a stop still in S4, take off and trans wont shift out of 1st.
    I can post a video later. Is this proper behavior? Thank you.
     
  5. Oct 4, 2020 at 7:56 AM
    #4895
    Wynnded

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    I'm going to make a speculative guess as to what may be happening until Mat has the time to chime in. You're driving around in S4 and locked in 4th gear. Then you slow down to a speed that's to low for 4th, so to prevent the engine from stalling the transmission will shift to 3rd, now you're locked to 3rd because you're still in the "S-range" (for a lack of a better term). The display doesn't change because the shift lever wasn't moved. I'm speculating that theses series of events continue to occur as the vehicle continues to slow to a stop and then shifts to 1st gear. Now because there's GL and the transmission is in 1st, you're stuck there until you move the lever as you accelerate regardless of what's shown in the dash.

    I wonder what happens when you accelerate in 1st then move the lever toward "+". Would it lock to 2nd and what would the dash indicator display?
    What would happen if you accelerate in 1st but instead move the lever toward "-". What would the dash indicate?

    Some model year TCUs may be responding to Mat's code changes differently as Toyota's code seems to be an evolution over time and model years.
     
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  6. Oct 4, 2020 at 8:10 AM
    #4896
    mzim

    mzim New Member

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    Thanks for your detailed response. Ill try S mode manually shifting up after a stop later on today. Just suprised me the first time messing around with it.
     
  7. Oct 4, 2020 at 8:22 AM
    #4897
    Wynnded

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    Ya, play around with it a little so see what happens. Maybe at some point it may make a little more sense. Then maybe let us know here, so we can have an idea what to anticipate.
     
  8. Oct 4, 2020 at 8:57 AM
    #4898
    Cuban11182

    Cuban11182 New Member

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    I'm going to agree. Mine did the same thing when I had the older version of Gear Lock. Basically S-Range GL is manual in the same way that Tow/Haul GL was. You should treat it as a manual, minus the clutch pedal.
     
  9. Oct 4, 2020 at 12:07 PM
    #4899
    4firemandan

    4firemandan Superduper Member

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    It will shift into 4th as soon as its able to with the safety parameters build in.

    From a stop you will start in 2 and then it will quickly go 3..4 and stay there unless you slow WAY down and it has to downshift again because of the safety. From what I remember the indicator stays in S4, same as it does in a regular ECU.

    Like stock, the gear light is what you're "shifted (set) to" not what your trans is actually in.
     
  10. Oct 4, 2020 at 12:26 PM
    #4900
    Wynnded

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    Does there seem to be a minimum speed where it'll upshift from a stop?
     
  11. Oct 5, 2020 at 6:21 AM
    #4901
    OVTune

    OVTune [OP] New Member

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    when in gearlock mode you must be in S and shift manually.
    Ideally, think of it as a manual without a clutch.
     
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  12. Oct 5, 2020 at 4:12 PM
    #4902
    4firemandan

    4firemandan Superduper Member

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    I may not fully understand the Q. I guess it depends on what gear you're in?

    It goesto the next gear as soon as the trans is in a "safe" place for that gear.

    So for example, we cant start in 5th.. it would bog and stall...
    It would bog and stall going from 1-5 also...

    If in manual mode and S5... from a stop it will start in 2 (because thats "safe" and do-able but 3 isnt from a stop) and then as soon as it deems it "safe" it will progress asap to the selected gear. It moves to 3 almost immediately, only a few mph.

    I dont know what the actual minimums are. I know that its enough that it feels ok to start from a stop and let it progress through them at the bare minimum "safe" shifts. Its a little less torque obviously.
     
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  13. Oct 5, 2020 at 4:45 PM
    #4903
    Wynnded

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    Thanks. I think I understand what you're saying.
    I'll work out the details when I get the chance to play with the tune for my truck when it is done.
     
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  14. Oct 6, 2020 at 12:11 PM
    #4904
    art64

    art64 New Member

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    OV tune, can you incorporate TC lock up also when you work on my tune? I know you need to troubleshoot it for GL not working. Thank You.
    89663-0CD33
     
  15. Oct 6, 2020 at 7:27 PM
    #4905
    TruckyTruck

    TruckyTruck Dumbest Username

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    @OVTune Mat, is this something we need to be requesting? I assumed this would be built into the gear lock.
     
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  16. Oct 7, 2020 at 4:18 AM
    #4906
    Cuban11182

    Cuban11182 New Member

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    This is the one thing I wish we could've had/done from the beginning (and have it evolve as new things were found). Do you want GL? Check this box. Do you want to remove the 4wd low range limits? Check this box.

    That way we know what is/was available and we can custom tailor our tune(s), instead of reading about it and then inundating Mat with more tune revisions. I'm sure that alone has caused many delays in the timeline for tune receipt (besides COVID).
     
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  17. Oct 7, 2020 at 4:39 AM
    #4907
    chasenicholas93

    chasenicholas93 New Member

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    Has anyone actually built their own tune yet in VF?
     
  18. Oct 7, 2020 at 7:15 AM
    #4908
    snivilous

    snivilous New Member

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    Agreed. A sheet with all the options laid out that you submit would be nice, and perhaps simplify things by saying THIS is what I (Mat) am willing to change. Can we change tons of things? Sure, but to keep matters fast and efficient these are the 12 parameters that are a yes/no option.
     
  19. Oct 7, 2020 at 10:40 AM
    #4909
    Wynnded

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    Hey amigo, are these giving you some grief? I can go out to my truck and yell and berate it if you think that will make it more cooperative. :argue:;):D
     
  20. Oct 7, 2020 at 11:21 AM
    #4910
    Cuban11182

    Cuban11182 New Member

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    Mat,

    So I went out to test my direct shift tune and ran into some issues. When shifting into A mode it acts very weird. Sometimes it goes to 3 sometimes to 4. Regardless though it will not shift up or down. When trying to start out in first from a stop it seems like it's starting in second. As soon as I toss it into D, it works fine. There was also a hiccup (but only once) where in tow/haul mode it was acting like it was in gear lock. I flashed my "stock" tune that you provided and it's back to normal. Any ideas?
     
  21. Oct 7, 2020 at 11:40 AM
    #4911
    Wynnded

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    I've had this happen on a completely stock vehicle but have never been able to reproduce it at will.
     
  22. Oct 7, 2020 at 11:47 AM
    #4912
    Cuban11182

    Cuban11182 New Member

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    I was going 45 to 55 after leaving my neighborhood. I was trying everything out to make sure that it worked, and had just finished tow/haul test in D. When I was heading away from the house, I was probably around 45 mph and it shifted over into S and it showed 3. When I gave it gas it accelerated, and when I shifted into 4, nothing happened. I shifted back into D, and then I shifted back into S going around 55. It would still not shift up or down, and beeped at me when I tried to put it into 2nd lol. So I switched back to D, and then turned down a side road and pulled a u-turn. When going up to the stop sign, I shifted in S, and down into 1st and turned right. It was very sluggish, and felt like it was starting in a higher gear. I switched back into D, came home, plugged the laptop, and flashed back to stock.

    It was very strange to be honest.
     
  23. Oct 7, 2020 at 11:58 AM
    #4913
    Wynnded

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    Hmmm, that's not what I would expect either, for sure. I would bet that Mat would want logs sent to Zendesk though, that way he would be better able to see what "all the things" are doing in relation to each other at specific points in time. I know that would require you to flash again and more of your time, but any data feedback, versus the relatively intangible subjective "seat or the pants feeling" that he can get, the better he can sort out these crazy TCUs.
     
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  24. Oct 7, 2020 at 12:13 PM
    #4914
    Cuban11182

    Cuban11182 New Member

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    I messaged Mat through the email he sent me the files in. I know that some folks like to come here and bash him without telling him on Zendesk, and I didn't want to be accused of that, lol. I'll post back once he replies and/or we figure this out.
     
  25. Oct 7, 2020 at 12:15 PM
    #4915
    Wynnded

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    Ya, sounds perfect.
     
  26. Oct 8, 2020 at 4:19 AM
    #4916
    4firemandan

    4firemandan Superduper Member

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    This sounds like it was in gear lock. Thats what mine does.

    I think the ECM picks the best gear for you when you flip over into S mode based on your speed/load/rpm ... with gear lock then you need to manually shift up/down if you arent in the gear you want.

    Starting off in 2 definitely sounds like gear lock. Were you in S mode? T/H?

    When I was first trying to figure out if it worked for me the best thing I did was scanned (either with the tuner software or a BT OBD2 scanner).. and watched the parameter that shows actual gear. A lot of time when I though it was shifting up/down it was just the converter.

    Also, the beeping at you for 2 was just because you were going too fast for 2nd. Thats a safety from the factory that we will still have.
     
  27. Oct 8, 2020 at 4:28 AM
    #4917
    Cuban11182

    Cuban11182 New Member

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    I've had gear lock in the past, and didn't personally see a need for it so I asked for only direct shift. This was not in tow/haul mode.
     
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  28. Oct 8, 2020 at 7:32 PM
    #4918
    Wynnded

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    @OVTune
    Might I casually inquire as to the progress of these?
     
  29. Oct 9, 2020 at 5:23 AM
    #4919
    OVTune

    OVTune [OP] New Member

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    Will have an update on YWF files as soon as possible.

    For some ECUs gearlock and directshift are just not working, even though everything in the code looks exactly right. If we can't get it resolved soon then we may have no choice but to pull the plug on those features for those ECUs.

    It's really weird because the code is literally identical...
     
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  30. Oct 9, 2020 at 5:43 AM
    #4920
    Wynnded

    Wynnded Mask

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    Copy that, appreciate the information. Thank you.
     
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