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Thread: Timing and tire spin question

  1. #1
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    Default Timing and tire spin question

    If I were wanting remove timing to help with traction off the line, what would be the best rpm/map areas to remove the timing? Also, how much timing is safe to remove? This is on a TT 402 cu in, 4l65e C5Z06, using 28/11.5/16 QTP Hoosiers.
    01Z06, A4, Huron Speed Twin 67/66's on a 402 LS2

  2. #2
    Lifetime Member ProperTuningOG's Avatar
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    Log launching and find out. Every rig is different.

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    I've been doing that. I just wanted suggestions on what may be enough and what may be too much. Trying to get in the ball park without hurting anything.
    01Z06, A4, Huron Speed Twin 67/66's on a 402 LS2

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    Lifetime Member 5.7ute's Avatar
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    Burst knock retard can be used to help with this, as long as there are no other large changes in airflow during the run.
    The Tremor at AIR

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    Quote Originally Posted by 5.7ute View Post
    Burst knock retard can be used to help with this, as long as there are no other large changes in airflow during the run.
    Could you expand on that thought please. Thanks
    01Z06, A4, Huron Speed Twin 67/66's on a 402 LS2

  6. #6
    Lifetime Member 5.7ute's Avatar
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    I have never tried this, but the theory behind it is to allow burst knock to trigger and decay as required at the hit of the throttle.Take a look at the burst knock retard delta airmass table. By logging Delta Airmass which I think you will need to construct a calc.pid for, and populating the table as required, you should be able to retard timing from the hit due to the large spike in Delta airmass. Then tune the decay rate to suit.
    The Tremor at AIR

  7. #7
    Joe (Moderator) joecar's Avatar
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    That is exactly how BK works.

    ~ posted by phone ~

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    op asked how much timing was safe to remove? any thoughts?

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