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vF Tuner for the 3.5L Tacoma-AGM tuning

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

  1. Apr 6, 2021 at 8:06 AM
    #461
    blitzkrieg3002

    blitzkrieg3002 Well-Known Member

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    Based on my testing. Doesn’t seem to be coolant temp as my voltages don’t change at all from a dead cold engine to a fully warmed up engine with the above tapered values.
     
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  2. Apr 6, 2021 at 8:50 AM
    #462
    Shellshock

    Shellshock King Shit of Turd Island

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    Yeah. After watching mine, I’m not convinced it’s coolant temp either. If it was, once you are at operating temperature, you’d always have the same output... but I don’t. It seems to vary based on ambient temperature
     
  3. Apr 6, 2021 at 8:51 AM
    #463
    SpeySquatch

    SpeySquatch Function over Form

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    I too see no change from 14.3-14.5 no matter if the engine is cold or hot
     
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  4. Apr 26, 2021 at 11:15 AM
    #464
    Skydvrr

    Skydvrr IG: @kalopsianick

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    Anyone here running the germes lab backup cam with the AGM mod?
     
  5. Apr 26, 2021 at 11:56 AM
    #465
    b3itz

    b3itz Camp Life

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    Tuned, geared, armored, BP51s...
    I use this one and i'm running a KD tune + AGM
     
  6. Apr 26, 2021 at 12:09 PM
    #466
    fake4x4

    fake4x4 Well-Known Member

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    I have a NorthStar X2 battery and I’m waiting for you guys to figure out this AGM
    Charging situation. I top off my battery monthly with great results but it would be nice to not have to do that anymore...
     
  7. Apr 26, 2021 at 12:31 PM
    #467
    Skydvrr

    Skydvrr IG: @kalopsianick

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    No issues with your back up camera? Mine has been on the fritz lately
     
  8. Apr 26, 2021 at 12:54 PM
    #468
    b3itz

    b3itz Camp Life

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    Tuned, geared, armored, BP51s...
    Nope, but my truck has also been at the shop for 3 weeks for gears. But i've been running it for months with no issues
     
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  9. Apr 26, 2021 at 12:56 PM
    #469
    Skydvrr

    Skydvrr IG: @kalopsianick

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    Interesting. Thanks for the feedback!
     
  10. Apr 26, 2021 at 12:57 PM
    #470
    Sunsetsearider

    Sunsetsearider Well-Known Member

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    Hi
    It’s figured out. What are you looking for?
     
  11. Apr 26, 2021 at 1:53 PM
    #471
    fake4x4

    fake4x4 Well-Known Member

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    i have OVtune 2.0 Final ..... wanted to get the AGM program to go along with my tune.... that’s awesome if it’s really perfected to near oEM spec .... I would hate to damage this battery
     
  12. Apr 26, 2021 at 1:54 PM
    #472
    SpeySquatch

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    7AB701B2-D25B-4D36-88F5-361C7D99AA3A.jpg
    Just edit the first table with these values.
    Holds 14.3-14.5volts consistently throughout charge
     
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  13. Apr 26, 2021 at 4:03 PM
    #473
    OVTune

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    OVTune

    A while back I mentioned I had been doing some digging into further controls on the alternator. You guys are correct that the temperature axis is not ECT (engine temp), it will be updated soon in VF Tuner as soon as I finish working out the code or find toyotas alternator patent.
    It's either straight ambient temp or an ambient temp base with an algorithm for calculating battery temp. I'll know once ambient temp PID is fully reversed.

    The charging control code is pretty complex.
     
  14. Apr 26, 2021 at 6:17 PM
    #474
    fake4x4

    fake4x4 Well-Known Member

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    That’s what I’ve been hearing when I ask if it’s Like an OEM with a AGM battery
     
  15. May 3, 2021 at 8:08 AM
    #475
    ihatemytruck

    ihatemytruck Smartass

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    Definitely this. We had a few hot days here recently, 90's, and my voltage usually sits between 14.6 and 14.7, and it was down to mostly 14.4.
     
  16. May 3, 2021 at 8:10 AM
    #476
    SubaruTheTacoma

    SubaruTheTacoma SubaruTheTacoma

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    I’m experiencing similar.

    Breckenridge CO-2 weeks ago with avg temp 30° Hitting ~14.4v avg

    Los Angeles CA- current with avg temp 75° hitting ~14.2v
     
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  17. Jun 13, 2021 at 12:24 PM
    #477
    mrCanoehead

    mrCanoehead Well-Known Member

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    I just got back into VF Tuner today. The problem I had was because I failed to understand that I needed to also change the values in the top left picture with the graph "Alternator Constant - Base Phase Duty". I corrected that and now the voltage is 14.3 V at idle, which is exactly what I want.

    You are saying for my truck "phase duty 1 will be 14.7." It is 76.7968 now, per your picture - should I really change it to 14.7? Seems a lot different?
     
  18. Jun 13, 2021 at 1:00 PM
    #478
    Shellshock

    Shellshock King Shit of Turd Island

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    Don’t change phase duty 1 from whatever the default value is. On some it’s 76 something others it’s 14.7.
     
  19. Jun 13, 2021 at 2:10 PM
    #479
    mrCanoehead

    mrCanoehead Well-Known Member

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    Ok, I think I will have to load the stock file and see what it's supposed to be and correct that. My truck fell out of warranty 5 months ago and I don't want to buy a new alternator!
     
  20. Feb 7, 2022 at 5:39 PM
    #480
    NateDNW

    NateDNW New Member

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    Can anyone share their settings on the newer versions of VF Tuner? Now that the tuner is in voltages and not percentages, what are people running for their Voltage Limits and Phase Duty's?
     

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