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What causes timing to retard at startup SR5 5.7 flex fuel

Discussion in 'Performance and Tuning' started by westley, Sep 7, 2024.

  1. Sep 7, 2024 at 3:39 PM
    #1
    westley

    #1
    westley [OP] New Member

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    west slater
    Need to find out more about Toyota tundra5.7 SR5 default vvt timing at startup.
    Flex fuel
     
    westley, Sep 7, 2024
    #1
  2. Sep 11, 2024 at 6:33 PM
    #2
    Mdl

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    Mdl Hey there...

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    JBA Longtubes, Snivs 2.0 SC pulley, ASP crank overdrive pulley 6.71 in, DD Full 3inch dual exhaust, IPT valve body, Airbox mod, 4.5inch intake, Denso 750, 450 Walbro, W/M injection, GM 95mm TB, SABM, Camburg UCA, Icon shocks, Speedmaster LSD, Motive 5.29 Gears, Mickey Thompson Baja Legend EXP 35's, solid Offroad engine mounts, DIY Traction Bars, Tuning by snivspeedshop.com
    The ECU uses the engine coolant temp for timimg. I believe 2 set points are knock retard minimum ect of 140deg and starts adding when it hits 176deg.
     
    Last edited: Sep 11, 2024
    Mdl, Sep 11, 2024
    #2
  3. Sep 11, 2024 at 6:50 PM
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    centex

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    centex New Member

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    Makes sense. Cold engines don’t like a lot of timing.
     
    centex, Sep 11, 2024
    #3
  4. Sep 13, 2024 at 6:11 AM
    #4
    texoma

    #4
    texoma Triple C Chop Shop

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    All the Chrome
    What are you wanting to know? Your question is pretty generic.
     
    texoma, Sep 13, 2024
    #4
    Mdl likes this.
  5. Sep 13, 2024 at 1:36 PM
    #5
    texoma

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    texoma Triple C Chop Shop

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    Also, what year is your Tundra? I can pull up the VVT maps and show you what’s going on
     
    texoma, Sep 13, 2024
    #5
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