G-8VXWWTRHPN JB4 AFR wire - VWWatercooled Australia

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JB4 AFR wire

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  • JB4 AFR wire

    I've been using the JB4 for 2 months and just realised that I've connected the AFR wire wrong.

    As per the picture below, it should be connected to the red wire going to the grey plug (under the black cable sleeve). I mistakenly connected it to the red wire going to the black plug (under the grey cable sleeve, adjacent to the correct one).

    Does anyone have any idea what is the wire I connected to? Is there anyway to tell if the AFR wire is connected properly (eg how do we know if the contact via the posi-tap is bad?).

    Click image for larger version

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  • #2
    Send George an email to find out what you tapped into.
    This is what it does.
    'If you have opted not to run the AFR wire to the lambda make sure your Fuel Bias values next to map 6 chart are all set to 0. The JB4 uses a calculation of the Fuel Bias Values and ECU AFR to work out the true value of AFR.'
    Fixxxer
    Lapiz Blue DSG Golf 7R

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    • #3
      Hey man,
      The Black plug is the O2 Sensor after the CAT, so the reading would be ok ish, doubt its done any harm.
      Skoda RS 230
      "The Grey Ghost"
      SG-TP-AB RS230 - Timeline

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