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Thread: Fluctuating wideband when logging, X-series OBDII canbus

  1. #1
    Tuner in Training
    Join Date
    Jun 2024
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    Fluctuating wideband when logging, X-series OBDII canbus

    Hi
    I move my thread from the sub forum over here,

    hope its right place to post " or let me know if there is a better section to post it in" , i have a problem with my lambda readings when im logging.
    my gauge is steady during wot but my lambda logging readings is jumping crazy 0.70-080 ish and its fluctuating fast.
    i did not have any problem yesterday then it was as steady and readings was same as my gauge "aem x-serie with obd harness", and day after when i was out and continue mapping this issue happens.

    some update , i was over today to a friends car for some tuning and guess what its the same fault when logging the lambda is fluctuating and the gauge is rock steady
    it must be an issue with vcm scanner, can someone help me and give me some info what might have been changed.
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    Last edited by Morgan Arnham; 3 Weeks Ago at 01:45 AM.