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Thread: Piston Slap Table

  1. #1

    Piston Slap Table

    I have an 05 GTO LS2. I would like to know a little more about this table. In the help function, it only says it modifies the spark advance to reduce piston slap.

    First, does it add or take away from the Main spark table.

    Second, it says it is used during warm up but doesn't say what table is used to determine if it's being activated. What table is used to determine when this table is active?

  2. #2
    there is a multiplier table that is not shown that starts at 1.0 at low coolant temps and then goes to 0 as the engine warms up. Also, the piston slap retard is compared to the cat lightoff retard and the lower is generally used.

    Chris...
    I count sheep in hex...

  3. #3
    So, I assume this means the numbers in the table are subtracted from the main spark table? Also, what constitutes a warm engine. I run a 160 t-stat. Would this temp get me to 0?

  4. #4
    Tuner in Training
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    I set mine to all 0. Really couldn't tell a difference.
    05 GTO
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  5. #5
    Advanced Tuner Pro Street's Avatar
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    Quote Originally Posted by grfperformance
    I have an 05 GTO LS2. I would like to know a little more about this table. In the help function, it only says it modifies the spark advance to reduce piston slap.

    First, does it add or take away from the Main spark table.

    Second, it says it is used during warm up but doesn't say what table is used to determine if it's being activated. What table is used to determine when this table is active?
    Where is this table?
    I can not find it.
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
    1957 Chevy vert

  6. #6
    Quote Originally Posted by Pro Street
    Where is this table?
    I can not find it.
    It's for LS2s.

  7. #7
    Advanced Tuner Pro Street's Avatar
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    Thanks
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
    1957 Chevy vert