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  1. #1

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    MS2 V3.57 issues

    Does anyone know of a clear wiring diagram and settings instructions for a ms2 running v 3.57 on an obd1 car? I have a turbo build going and all I can find is conflicting information everywhere I look. Very little info on the 3.57 from what I can find.

  2. #2
    HNIC SC2Sick's Avatar
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    Sixthsphere.com Owner
    2016 Honda Fit
    2003 BMW e46
    2001 Saturn SC2 - Forged with everything but boost - FOR SALE PM FOR MORE INFO
    1998 Ford Ranger

  3. #3

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    Recently got mine started, but has not been on the road yet.

    GM DIS Pinout
    6pin connector:
    A) 12v power (pink), needs to be hot in run & crank. Use 7.5 amp fuse.
    B) 6X ref (white) -- unused, might drive a tach output?
    C) EST wire (WHITE) -- used for Timing Advance signal. Wired to D14/SparkA.
    D) Reference High (Purple w/white tracer) -- Tach input to MS
    E) unused
    F) EST Bypass wire (Tan w/black tracer) -- when 5v is applied, module will use timing signal from MS on pin C. When no signal, timing should be in limp-home 10* BTDC. I have this wired to D16 via SPR3.

    5pin connector:
    A) Positive crank sensor wire (yellow) -- goes to crank position sensor
    B) Negative crank sensor wire (purple) -- goes to crank position sensor
    C) not used
    D) Reference low (red w/black tracer -- Goes to MS sensor ground
    E) High current ground. Ground to the block.

    Used with Basic Trigger ignition setting, with a 10 degree trigger angle, it seems to work pretty good.

    -Dave

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