Results 1 to 5 of 5

Thread: Wheres the spark?

  1. #1
    Member
    Join Date
    May 2008
    Posts
    63

    Default Wheres the spark?

    Hi guys,
    Just starting to write a tune for a VZ6.0 that ill be fitting a turbo to this week. Ive upgraded the o/s to 2 bar .Ive found the boost ve table but there doesnt seem to be a boost spark table. The O.S is 2598977. In the earlier o.s the spark lies in the efi live custom cals section but on this one there is no efilive section . Anyone see what im missing?Cheers

  2. #2
    Lifetime Member johnv's Avatar
    Join Date
    Jan 2005
    Posts
    338

    Default

    Quote Originally Posted by shane View Post
    Hi guys,
    Just starting to write a tune for a VZ6.0 that ill be fitting a turbo to this week. Ive upgraded the o/s to 2 bar .Ive found the boost ve table but there doesnt seem to be a boost spark table. The O.S is 2598977. In the earlier o.s the spark lies in the efi live custom cals section but on this one there is no efilive section . Anyone see what im missing?Cheers
    Your not missing anything, there isn't one.
    the last columb of the spark table will be carreid through into boost.

  3. #3
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    GM allowed the spark g/cyl to be scaled from the factory, you can change the value {B5115}.

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

  4. #4
    Member
    Join Date
    May 2008
    Posts
    63

    Default

    So lets see if ive got this right, in b5112 where i command say 11.0 afr (eq 1.33)i could subtract timing say-14 degrees at x rpm and that value will be subtracted from the final timing in b5101 for that rpm/g/cyl link once it passes 1.36 g/cyl(im assuming it will with boost). The older ls1s with boost timing are soo much easier.Any other surprises lurking in the 02598977 o.s.
    when dealling with boost? Cheers Shane

  5. #5
    Member
    Join Date
    May 2008
    Posts
    63

    Default

    B5115 in this o.s. is ethanol spark correction dont think that will help.?

Similar Threads

  1. Ok.....wheres my problem
    By Forcefedperformance in forum Forced Induction and Nitrous Oxide (N20)
    Replies: 7
    Last Post: July 20th, 2009, 11:32 AM
  2. Take a look, please.. AFR, TCC, Spark
    By tatasta in forum Gen III V8 Specific
    Replies: 5
    Last Post: April 26th, 2009, 04:14 AM
  3. Under spark
    By twinki025 in forum Gen III V8 Specific
    Replies: 6
    Last Post: October 21st, 2007, 04:42 PM
  4. Base Spark and Spark Modifiers
    By lplott in forum General (Petrol, Gas, Ethanol)
    Replies: 0
    Last Post: May 11th, 2007, 04:33 AM
  5. Wheres My Timing At?
    By Forcefedperformance in forum Forced Induction and Nitrous Oxide (N20)
    Replies: 7
    Last Post: May 4th, 2006, 02:32 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
  •