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Thread: Autronic MAFM1 wideband analog to V2

  1. #1
    Junior Member
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    Default Autronic MAFM1 wideband analog to V2

    We've been using an M&W WB02 unit ( PLX Compatible) for some time using the analog input on the V2 with no issues .

    We've just updated our WB02 to an Autronic MAFM1 which uses the bosch LM11 sensors.

    No serial output , so I'll also be using analog - It connects to our mainline dyno no probs , all the right numbers on the screen.

    HOWEVER there is a difference from what's displayed on the screen to what is displayed on the EFI Live log screen ( still using plx settings )

    Obviously the configuration is different , there is no "Autronic" WB02 on the V2 so I gather I need to re-calibrate the a/d - can anyone shed some light ?

  2. #2
    Lifetime Member mr.prick's Avatar
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    There are predefined Autronic pids
    {CALC.AFR_AUT1} & {CALC.AFR_AUT2}

    You may need to build a calc_pid for your particular model though.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  3. #3
    Joe (Moderator) joecar's Avatar
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    Luis,

    Can please you post the Autronic user manual pdf.

  4. #4
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    This is it . thanks in advance
    Attached Files Attached Files

  5. #5
    Lifetime Member mr.prick's Avatar
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    From the manual:

    ANALOG O/P CONNECTIONS:-
    RED 0 to 5volt O/P = 10.0:1 to 30.0:1 Air fuel ratio (default setting).
    WHITE 0 to I volt O/P = 10.0:1 to 30.0:1 Air fuel ratio (default setting).
    BROWN Signal Ground
    YELLOW Chassis Ground

    If stoich = 14.7:1 then the default Lambda range is 0.680 - 2.041
    PID expressions would be:

    AFR Expression
    ({EXT.AD}*4)+10
    Lambda Expression
    ({EXT.AD}*0.2722)+0.68

    1.176 volts = 14.7 afr/1.00 lambda


    Since this thing is programmable you will need to be sure of the settings.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

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