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Thread: Installing data loggers on obd1 S50/506 dme OBD1.

  1. #1
    Join Date
    Feb 2008
    Location
    Durango/Bayfield CO
    Posts
    319
    My Cars
    1995 M3 Coupe 5pd

    Installing data loggers on obd1 S50/506 dme OBD1.

    If I don't go stand alone ecu, I need to figure out data logging. Zeitronics, AEM, Innovate, etc. I am not finding how to hookup the units to the car. I know AFR is from the WB controller. Can you get rpm, temps, etc. from the diagnostic port? Or do you have to tap into the harness? Do any read ignition timing? Just trying to get an idea to help make an informed decision. Thanks
    Last edited by h82crash; 05-10-2020 at 04:00 PM.
    Tom
    Currently 1995 M3 manual coupe, 1993 325is
    Past cars
    2003 530i
    1998 528i
    1995 530i
    1988 528e
    1988 535i
    1987 2.7i
    1972 2002

  2. #2
    Join Date
    Feb 2008
    Location
    Durango/Bayfield CO
    Posts
    319
    My Cars
    1995 M3 Coupe 5pd
    After more hours of searching, I found the refresh rates are too slow from the diagnostic port because it apparently only receives what the DME wants to give the port, for useful logging. I guess it is hours of splicing into sensor leads in the harness. Can anyone confirm or shed some light on this?
    Tom
    Currently 1995 M3 manual coupe, 1993 325is
    Past cars
    2003 530i
    1998 528i
    1995 530i
    1988 528e
    1988 535i
    1987 2.7i
    1972 2002

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