Results 1 to 5 of 5

Thread: Spark Boost retard table

  1. #1
    Senior Member
    Join Date
    Feb 2005
    Posts
    126

    Default Spark Boost retard table

    I just want to clarify. It states in the documentation that the boost timing table is subtracted from the values of the final timing. Is the base timing (of the final timing) taken from the 105 kpa row of the standard tables?
    99 FRC 402 Twin Turbo

  2. #2
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    It will subtract the value you enter from the final spark number (from your main spark tables and modifiers), all dependent on the boost level.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  3. #3
    Senior Member
    Join Date
    Feb 2005
    Posts
    126

    Default

    Quote Originally Posted by GMPX
    It will subtract the value you enter from the final spark number (from your main spark tables and modifiers), all dependent on the boost level.

    Cheers,
    Ross
    This is not clear.

    I am sorry, I was not thinking correctly, spark is a function of airflow. Duh. Is it possible to exceed the max airflow in the tables?
    99 FRC 402 Twin Turbo

  4. #4
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    Yes, but not easily, however, in reality, I am not sure that having a great big 3D spark map in boost would be ideal anyway, the 2D system might seem crude but it does do the job fine.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  5. #5
    Senior Member
    Join Date
    Feb 2005
    Posts
    126

    Default

    I agree with you. Now that I think about it it makes good sense to have it set up this way. Rather than having it command a fixed spark for a fixed boost level. May be a bit harder to initially tune since there are more variables but ultimately giving more control.
    99 FRC 402 Twin Turbo

Similar Threads

  1. Phantom Spark Retard
    By truethinker in forum Gen III V8 Specific
    Replies: 44
    Last Post: January 6th, 2010, 05:44 PM
  2. AC spark retard?
    By GMCtrk in forum Gen III V8 Specific
    Replies: 1
    Last Post: August 28th, 2009, 01:26 PM
  3. need to retard timing under boost
    By JOHNGEAR in forum Forced Induction and Nitrous Oxide (N20)
    Replies: 5
    Last Post: November 8th, 2008, 01:07 AM
  4. Spark Retard
    By eclispe1 in forum Custom Operating Systems
    Replies: 3
    Last Post: August 23rd, 2007, 08:31 AM
  5. nitrous spark retard
    By maxxxboost in forum Tips and tricks
    Replies: 2
    Last Post: May 11th, 2006, 05:06 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •