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  1. #1

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    MS Stock ICM Spark Advance

    Hey so I am knew to the whole stand alone PCM system. Im going to use Mega squirt injunction with the stock ICM. I understand the ICM keeps the timing at 10 deg advance until 400 rpms when the bypass circuit is activated and the PCM takes over. My question is when I set up my spark advance table in tuner studio do compensate for the 10 degrees of advance. What I mean is if I want a total of 19 degrees advance, do I set the spark advance in the table to 9. 9+10 will be my total advance of 19 deg?

  2. #2
    HNIC SC2Sick's Avatar
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    Sixthsphere.com Owner
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    siris's Avatar
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    Just set your trigger offset to +10, and you should be good.
    Last edited by siris; 12-28-2016 at 10:54 AM. Reason: Got my negatives and positives mixed up.
    72 Charger: pissed me off, on jackstands.
    95 SW1m: Dohc swap. DD. I can haz boost?

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  5. #4

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    Quote Originally Posted by siris View Post
    Just set your trigger offset to +10, and you should be good.
    I was wondering if that was all I needed

  6. #5
    6S Moderator S.Bretz's Avatar
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    Once you have it set up you enter the spark advance that you want and it will be that number...if its set up properly.
    -6S Resident Mechanical Forensics member #001.
    1995 SC2 Turbo 3.6L DOHC, 6sp manual, Ford 8.8 rearend running on MS3x.
    1998 F-250 5.4L triton...stock.

  7. #6
    siris's Avatar
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    Quote Originally Posted by S.Bretz View Post
    Once you have it set up you enter the spark advance that you want and it will be that number...if its set up properly.
    This. Best way to do it is to set your spark table at 0, then use a timing light on the crank pulley, adjust your offset so your light fires at tdc.
    72 Charger: pissed me off, on jackstands.
    95 SW1m: Dohc swap. DD. I can haz boost?

  8. #7
    6S Moderator S.Bretz's Avatar
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    Quote Originally Posted by siris View Post
    This. Best way to do it is to set your spark table at 0, then use a timing light on the crank pulley, adjust your offset so your light fires at tdc.
    Yep...there is a notch on the crank pulley and on the timing cover that line up at TDC.

    Also, don't use a timing light with an advance knob...that do not work on waste spark systems. You the cheap timing light...the cheaper the better.
    -6S Resident Mechanical Forensics member #001.
    1995 SC2 Turbo 3.6L DOHC, 6sp manual, Ford 8.8 rearend running on MS3x.
    1998 F-250 5.4L triton...stock.

  9. #8

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    I've seen the notch on the crank pulley.. where's the mark on the block that it needs to line up with for TDC? Looks like it's kinda hard to see from the top??

    Just got my 95 SC2 fired up on MS2 Extra. I set the offset set to 10 and it seems to work fine (ie-- engine sounds good) , but I just want to verify with a timing light.

    -Dave

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