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Thread: Wrangler 2012 o2 afr readout

  1. #1
    Potential Tuner
    Join Date
    Apr 2019
    Posts
    7

    Wrangler 2012 o2 afr readout

    Hey sorry if this is a dumb question but i cant for the life of me get afr to log in the scanner . I cant even get the commanded to show up in the scanner. Can someone shed some light on this - i have pretty much anything to do with fuel /air in the left side list

  2. #2
    Advanced Tuner
    Join Date
    Jun 2010
    Posts
    293
    Scanner_Tools_Math parameters

    measured lambda * your Stoichmetry ratio= ( 1/ your FA stoich) this will be your measured AFR.

    example:

    (Measured lambda .90) *( stoich 14.08= 1/ .071) = measured AFR= 12.67
    Last edited by castorjames; 06-16-2019 at 05:02 PM.

  3. #3
    Tuner
    Join Date
    Jun 2018
    Location
    Dubai
    Posts
    62
    the jk shows only commanded AFR u should buy external O2 sensor to data log the actual AFR
    Jeep wrangler 2012 automatic, sprintex supercharger, 9lbs of boost, 4.5" lift, fox 2.5 internal bypass shocks, 4.88 gears, 37" tires,

    Ford Mustang Shelby gt350 2017, airraid air filter, jlt catch-can,