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Thread: does the autove tutorial disable closed loop with cos3?

  1. #1
    Senior Member
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    Default does the autove tutorial disable closed loop with cos3?

    Does following the autove tutorial disable closed loop with cos3 ? I was under the impression that it did but I've followed all the instructions and I see my short term fuel trims moviing . Do I need to change my b3647 table to not have any cells at stoich ?

  2. #2
    Lifetime Member 5.7ute's Avatar
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    Yes, you need to ensure you are not commanding stoich in B3647 to prevent STFT.
    The Tremor at AIR

  3. #3
    Joe (Moderator) joecar's Avatar
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    If you don't restore B3801 and B4205 then you will remain in OL.

    The cells in B3647 that are stoichiometric (same as B3601) will cause trimming via STFT's... this is called Semi Open Loop (SOL).

    you need to do as 5.7ute said above...

    Do not attempt to do AutoVE or AutoMAF with SOL active.

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