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Thread: Is it normal to see lean on MAF & VE after tuning?

  1. 08-24-2023 #41
    McMx5
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    Noted. I will post the tune when I get back to my pc
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  2. 08-24-2023 #42
    McMx5
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    Here is the last tune & log
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  3. 08-24-2023 #43
    SiriusC1024
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    O2's do look a little lazy. You're welcome to my longtube O2 settings. Can't guarantee they'll work for your setup, but hopefully they help. See what happens to the fuel trims.
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  4. 08-24-2023 #44
    McMx5
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    Im not experienced enough to know what lazy o2s look like but here is a short log after those o2 settings....
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  5. 08-24-2023 #45
    SiriusC1024
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    Look at how B1S1 and B2S2 are switching rapidly, full range, no short stops.

    Looks better except at low rpm and idle. Higher airflow has too much compensation gain.

    Increase cells 0 and 2 of ECM 12480 (Closed Loop Proportional Base vs Airflow Mode, and decrease proportional at cells 8-14. Raise cell 16. ECM 12482 (Closed Loop Proportional Idle Base vs. Airflow) to 386 across the board.
    Here:
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    Last edited by SiriusC1024; 08-24-2023 at 04:34 PM.
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