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vF Tuner for the 3.5L Tacoma

Discussion in '3rd Gen. Tacomas (2016+)' started by Rafael@OVTune, Apr 23, 2020.

  1. Sep 16, 2020 at 8:45 AM
    #4501
    ForceOfG

    ForceOfG Active Member

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    Yup I noticed that as well. It looks more pronounced than it is, it only dropped by about 2% but thinking about it again it shouldn't have done that anyway and just keep the throttle consistent. :annoyed:
     
  2. Sep 16, 2020 at 8:54 AM
    #4502
    Kleach18

    Kleach18 Well-Known Member

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    Maybe I'm missing a setting I'm supposed to change. I used the .VFT file Ovtuning posted back in this thread somewhere to edit the 4b04 tune that a member posted a few pages back. Highest I'm seeing the control module voltage PID go is 14.1v.. Did I miss changing a setting somewhere besides the "alternator constant" map definitions section?
     
  3. Sep 16, 2020 at 8:55 AM
    #4503
    Shellshock

    Shellshock King Shit of Turd Island

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    Did you change the duty %?
     
  4. Sep 16, 2020 at 8:58 AM
    #4504
    Kleach18

    Kleach18 Well-Known Member

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    Yeah I opened the file for the most recent 2.0 a member posted a few pages back and also opened the alternator file OVTuning posted and compared the alternator constant files and made all the changes.
     
  5. Sep 16, 2020 at 9:00 AM
    #4505
    Kleach18

    Kleach18 Well-Known Member

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    What was the final number for the "duty cycle" everybody decided on was best while running a Northstar AGM 27F?

    Thinking maybe I pulled on older file that was updated multiple times. Lots of pages to search through
     
    Last edited: Sep 16, 2020
  6. Sep 16, 2020 at 9:33 AM
    #4506
    jstemp

    jstemp Well-Known Member

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    I used the settings from Post #737 Only I upped My ECT from 93 to 94. That gave me 14.5V at the battery using a volt meter. I also have a 24F battery not a 27F. Maybe start with with that and you can always bump up the ECT Value to increase voltage.
     
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  7. Sep 16, 2020 at 9:34 AM
    #4507
    Shellshock

    Shellshock King Shit of Turd Island

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    Mine is set at 94 and i increased the duty cycle by 20%
     
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  8. Sep 16, 2020 at 10:10 AM
    #4508
    jstemp

    jstemp Well-Known Member

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    So you went up 20% over the modified duty cycle settings in that post or over stock?
     
  9. Sep 16, 2020 at 10:29 AM
    #4509
    Shellshock

    Shellshock King Shit of Turd Island

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    Over stock

    I left phase duty 1 unchanged. All the rest +20%
     
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  10. Sep 16, 2020 at 11:02 AM
    #4510
    b3itz

    b3itz Well-Known Member

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  11. Sep 16, 2020 at 11:04 AM
    #4511
    Shellshock

    Shellshock King Shit of Turd Island

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    Because if you look at the stock compared to those numbers, its approx +20% on each. I like consistency.
     
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  12. Sep 16, 2020 at 11:05 AM
    #4512
    b3itz

    b3itz Well-Known Member

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    OCD - i dig it
     
  13. Sep 16, 2020 at 11:07 AM
    #4513
    Shellshock

    Shellshock King Shit of Turd Island

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    Also laziness.. lol i can just change the first digit
     
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  14. Sep 16, 2020 at 11:13 AM
    #4514
    trd pr0

    trd pr0 Member

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    I just checked my battery it’s at 12.52volts
    I up the duty to 96 and drive around a little and check again

     
  15. Sep 16, 2020 at 11:23 AM
    #4515
    Shellshock

    Shellshock King Shit of Turd Island

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    These are all the tables i modify (stock values shown below) for AGM changes

    If you ONLY modify the “base phase duty” your output is going to be lower than you may expect, or you’ll have to raise it higher to get the output you want.

    If i set base phase duty to 94 and up the duty cycle +20 (max of 102.3) on duty 2/3/4/5/6/7/9, my output is at 14.5v. I’ve been running this since June 23 without issue.

    254D40C3-15BB-4FAF-9B16-0C67D6E10462.jpg
     
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  16. Sep 16, 2020 at 11:54 AM
    #4516
    GoldenBrew

    GoldenBrew Road Glide Rider

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    ??? so if you are running two agm batteries is there another location to alter the charging for battery number 2 ? Or just for a single battery. Sorry for the stupid quesitons. thanks for the education.
     
  17. Sep 16, 2020 at 11:57 AM
    #4517
    Shellshock

    Shellshock King Shit of Turd Island

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    If you are running dual batteries, you typically run some kind of isolator / BMS / charging relay. It’s still the same output, its just managed and split between the two
     
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  18. Sep 16, 2020 at 12:10 PM
    #4518
    Mooseditty17

    Mooseditty17 Seasoned Rookie

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    So if you flash an update, and don't clear LV and AT, it's not all der-de-der... That's good to know. Thanks for the replies!

    I'm still wanting to tweak 5th and sixth up, and don't want to start all over again with the learning process. Plan is to alleviate overdrive(s) from being used while towing. It's being tuned to hold onto 4th until 70mph before upshifting to 5th, and when accelerating while in 4th, it hangs on just a tad longer than factory ETC mode before downshifting into 3rd. My hope is to eliminate the gear hunting on the highway. I'm camping in a couple weeks. Excited to see if it works as well as I plan.
     
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  19. Sep 16, 2020 at 12:15 PM
    #4519
    SpeySquatch

    SpeySquatch Function over Form

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    I’m on this charging at 14.5 (multimeter) as well.
    8E141758-82C4-466A-92CE-3B0895D99EFC.jpg

    Having a usb voltage plug in the spare charger hole reads 14.5 as well
     
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  20. Sep 16, 2020 at 12:46 PM
    #4520
    Kleach18

    Kleach18 Well-Known Member

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    How much of a difference are you guys getting from what vF Tuner logger states and the volt meter at the battery says? I'll have to check and see when I get home tonight what the numbers are with a volt meter. But currently if I run base phase duty at 94 I get around 14.25-14.40 max control module voltage and a battery voltage of around 14.6v. If I bump it up to 95 if get about 14.35-14.55 control module voltage and a battery voltage of around 14.72 give or take a few. This is all viewed via logger in vFTuner software..

    I'm sure its over charging with the base phase at 95 so I changed it back to 94.

    Just curious how off the logger is from the actual hard points at the battery for you guy/gals
     
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