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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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    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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