AFR wiring

  1. L-plater Joined: Aug 2014 Posts: 36
    #1
    Hello everyone
    I have an ax XSI 1.6 cata
    After some modifications to the engine I would install an air fuel ratio gauge to know the engine behavior.

    I do not intend to pay 200euros so I took a narrowband gauge to have an overview


    Thing is... i adapted the o2 plug to the engine o2 plug.

    If someone can give me information about the 4 wires that comes from the engine lom and the 4 that comes from the o2 sensor so i can fix it, id apreciate.
    Here my wires from the engine loom



    example the red is conencted to the grey one etc...

    Thanks you
  2. Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380
    #2
    narrow band lambda totally usless to give air/fuel ratio --only reads beteen about 12,2-15,6 and thats using a 1 volt scale --not 0-5v like a wide band --0.5 is lambda 1 on narrow band unit --wide band probe will have five wires as well+needs a control unit
    wasting your time must be a w/band probe to use as an accurate fuel value
  3. Regular Poster Joined: Jan 2015 Naestved, Denmark Posts: 281 ex-Blue 106 Rallye 1.6 '97 Black 106 Gti '99
    #3
    Try to Google narrowband air fuel gauge, then watch a video