1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

vF Tuner for the 3.5L Tacoma-AGM tuning

Discussion in '3rd Gen. Tacomas (2016+)' started by banjoist13, Oct 12, 2020.

  1. Mar 13, 2022 at 5:12 PM
    #481
    robmypro

    robmypro Member

    Joined:
    May 11, 2021
    Member:
    #365370
    Messages:
    20
    Gender:
    Male
    First Name:
    Rob
    Vehicle:
    2021 Tacoma TRD Pro
  2. Mar 13, 2022 at 5:22 PM
    #482
    mZiggy

    mZiggy Honey badger; VFPro licensed; YotaWerx Tuning

    Joined:
    Apr 8, 2017
    Member:
    #215707
    Messages:
    4,458
    Gender:
    Male
    First Name:
    Marc
    Vehicle:
    2020 MGM Tundra SR5; 2020 4R TRD Pro; 2008 4R SR5 v8
  3. Mar 13, 2022 at 7:39 PM
    #483
    robmypro

    robmypro Member

    Joined:
    May 11, 2021
    Member:
    #365370
    Messages:
    20
    Gender:
    Male
    First Name:
    Rob
    Vehicle:
    2021 Tacoma TRD Pro
    Okay thanks.
     
  4. Aug 4, 2022 at 6:34 PM
    #484
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    I just had my truck tuned with the basic OVtune to include a charge increase for my AGM.

    I just want to check that things are correct in that regard. Using a voltage monitor in the cigarette port with the truck running I'm hovering around 14.3-14.5 volts. If I go above 3500 RPM, with the AC off, I dance with 14.8. I think one time I've seen 14.9. It is very hot here, upper 90s if that matters. My Odyssey battery says it's optimal charge voltage at 68* is 14.4-14.8 volts, so I believe I'm okay. I just want to confirm that I'm not over charging my battery. With a voltmeter right to the battery with the truck stationary, even at 3500 RPM the voltage doesn't get above 14.5.

    Full disclaimer I know nothing about the ins and outs of the tune or tuning process, I fully trust the person who did the tune to do it right but I'd like to learn. @tonered what do I need to know?
     
    tonered likes this.
  5. Aug 4, 2022 at 6:44 PM
    #485
    mZiggy

    mZiggy Honey badger; VFPro licensed; YotaWerx Tuning

    Joined:
    Apr 8, 2017
    Member:
    #215707
    Messages:
    4,458
    Gender:
    Male
    First Name:
    Marc
    Vehicle:
    2020 MGM Tundra SR5; 2020 4R TRD Pro; 2008 4R SR5 v8
    You should be okay, although people in particularly hot climates can find value in settings that taper with engine coolant temp. Based on your bio though, you're in NY and can see the other end of the spectrum as well. Nonetheless, I wouldn't worry about it for the time being unless you start seeing a particularly frequent occurrence of 14.9+ for long periods of time
     
  6. Aug 4, 2022 at 6:51 PM
    #486
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    Thanks. I only had it done two days ago but seeing anything 14.7 or higher definitely seems to be the exception, and under normal driving it stays around 14.4. But you’re right on the climate. It might have hit 100° today but come February up in the mountains seeing -20° isn’t unheard of.
     
  7. Aug 4, 2022 at 7:38 PM
    #487
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    28,385
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    That is a bit high for my taste. I'd want it in the mid-region or lower. That's just me though.
     
    mZiggy likes this.
  8. Aug 4, 2022 at 7:40 PM
    #488
    mZiggy

    mZiggy Honey badger; VFPro licensed; YotaWerx Tuning

    Joined:
    Apr 8, 2017
    Member:
    #215707
    Messages:
    4,458
    Gender:
    Male
    First Name:
    Marc
    Vehicle:
    2020 MGM Tundra SR5; 2020 4R TRD Pro; 2008 4R SR5 v8
    My own personal preference is for a bit lower as well.

    I have heard of people preferring it running a little higher though.
     
    tonered likes this.
  9. Aug 4, 2022 at 7:41 PM
    #489
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    28,385
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    Yeah. I can see folks wanting the full charge voltage.
     
  10. Aug 4, 2022 at 7:49 PM
    #490
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    What should it be under normal driving conditions and what’s the highest you’d want to see with higher RPMs? What’s the danger of going too high? Shortened battery life I imagine but any more serious risks?
     
    tonered likes this.
  11. Aug 4, 2022 at 8:45 PM
    #491
    BortisYeltzen

    BortisYeltzen Well-Known Member

    Joined:
    Dec 17, 2016
    Member:
    #205105
    Messages:
    1,162
    Gender:
    Male
    First Name:
    Barrett
    Salt Lake City, UT
    Vehicle:
    2017 MGM TRD Off-road DCLB
    OV Tuned, Bilstein TRD Pro lift, ECGS bushing, Heated Clazzio's, RCI SKID TRILOGY, BAMF sliders, ARE V-Series shell, RokBlokz flaps, more to come
    I wouldn’t want to see anything over 14.5 when it’s over 75-80F out. Higher voltage only needed when it’s cold. 14.3 is where I try to keep things for AGM. Leave a little margin. 14.7 during a cold start on a cold day (<30F) before engine coolant comes up to temp is ok. Anything over that I’d personally be a little concerned. That’s just me though.

    Watch your battery, if it starts swelling, you’re overdoing it.

    Who did your tune? That’s a spicy AGM setup.
     
    Last edited: Aug 4, 2022
  12. Aug 4, 2022 at 8:51 PM
    #492
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    28,385
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    We've been setting it to about 14.2v. A decent bump over stock, but plenty of margin.

    The charge voltage should not vary by RPM once above idle.
     
  13. Aug 5, 2022 at 3:24 AM
    #493
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    Ok all good info to know thank you. If RPM doesn’t change it, what is the best way to measure what the voltage is? A voltmeter on the battery or using a display in the cigarette plug like I’ve been doing. It’s possible that $6 Amazon item isn’t the most accurate either whereas I’d be more inclined to trust the voltmeter.
     
  14. Aug 5, 2022 at 4:57 AM
    #494
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    Just toon the truck for a drive, ambient temp is 75°. While driving the reader in the 12v plug was showing anywhere from 14.6-14.8 mostly at 14.8. At idle, the same reader showed 14.7 and a voltmeter directly on the battery was holding a steady 14.88 volts.

    Thinking too high and to get in touch with who did the tune?
     
    Last edited: Aug 5, 2022
  15. Aug 5, 2022 at 5:29 AM
    #495
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    28,385
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    I always check at the terminals to see what the difference is at the cab display.
     
  16. Aug 5, 2022 at 5:45 AM
    #496
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    If anything the terminals are .1 higher than the cab display. I’m going to go for a longer drive soon and see how it reads after everything has really warmed up but I’m thinking I’ll feel better if I have the voltage adjusted lower.
     
    tonered likes this.
  17. Aug 5, 2022 at 7:24 AM
    #497
    BortisYeltzen

    BortisYeltzen Well-Known Member

    Joined:
    Dec 17, 2016
    Member:
    #205105
    Messages:
    1,162
    Gender:
    Male
    First Name:
    Barrett
    Salt Lake City, UT
    Vehicle:
    2017 MGM TRD Off-road DCLB
    OV Tuned, Bilstein TRD Pro lift, ECGS bushing, Heated Clazzio's, RCI SKID TRILOGY, BAMF sliders, ARE V-Series shell, RokBlokz flaps, more to come
    Personally, my opinion based on a lot of testing I did on this, your tune is set too high. I’d ask the tuner to back it down. There are setting posted in here that will be safer in my opinion.

    My settings and reasoning is shown here:
    https://www.tacomaworld.com/threads...acoma-agm-tuning.689652/page-19#post-25218453
     
  18. Aug 5, 2022 at 7:40 AM
    #498
    littlefish

    littlefish Buzz, your girlfriend...

    Joined:
    Sep 13, 2018
    Member:
    #266147
    Messages:
    1,648
    Gender:
    Male
    Hudson Valley NY
    Vehicle:
    2016 TRD Off-Road DCSB
    The one who dies with the most stuff wins.
    Agreed. I’m on the books for Wednesday to meet up with him to lower it. I went for an hour drive and it’s definitely holding steady at 14.88 at the battery. Definitely too high.


    What should we aim for roughly it to be consistent around? 14.3?
     
  19. Aug 5, 2022 at 8:24 AM
    #499
    Shellshock

    Shellshock King Shit of Turd Island

    Joined:
    Nov 21, 2015
    Member:
    #170338
    Messages:
    19,467
    Iowa
    Vehicle:
    2019 Tundra TRD PRO
    I usually aim for 14.2-4
     
    tonered and BortisYeltzen like this.
  20. Aug 5, 2022 at 5:53 PM
    #500
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    28,385
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    Good info to have. Now you know what is really going on with you cab display. A 0.1V drop is par for the course.

    :cheers:
     

Products Discussed in

To Top