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Thread: Help my spark advance is too high

  1. #1
    Junior Member
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    Jun 2007
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    Question Help my spark advance is too high

    I don't understand why the timing is so high, I'm seeing 41* @ wot

    This is the second engine I've fried from this I'm running COS5 on a '99 Camaro with an LS2.

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  2. #2
    Lifetime Member
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    Do you mind posting up the offending tune?

  3. #3
    Junior Member
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    Here it is. Try to take it easy on me I'm a newbie. Its a semi-cl sd tune.
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  4. #4
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    Table A0010 is quite possibly the offender.

    Set A0015 = 1
    A0016 = 0
    A0010 = 0

    Give it a try.

  5. #5
    Joe (Moderator) joecar's Avatar
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    Also do this: if not mentioned by Justin, set these tables to in-range values:
    {A0001}
    {A0002}
    {A0017}
    {A0018}
    {A0009}
    {A0015}
    {A0016}
    {A0010}
    {A0011}
    {A0012}

  6. #6
    Joe (Moderator) joecar's Avatar
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    You also need to get your pid selection down a little so that no more than 24 channels are used... otherwise your resolution will be 0.2s instead of 0.1s.

    Edit: this is important if you're using log data to directly modify any tables.

  7. #7
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    I changed those tables and logged data looks ok now. What is it that caused my ignition advance to randomly command too much timing?

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