Results 1 to 3 of 3

Thread: Small Pulse adjust issue on Z06 E38 PCM. EfI Live is changing my values.

  1. #1
    Junior Member
    Join Date
    Jun 2011
    Posts
    17

    Default Small Pulse adjust issue on Z06 E38 PCM. EfI Live is changing my values.

    When putting in small pulse adjust table for ID850 injectors, Efi live changes the values that I enter when I save and reload the tune. If I put in a value of .011 it changes the value to .007813. If I put in a value of .012 to changes the value to .0156. Is there some sort of threshold that I am hitting that is cause this? What is the problem here?

    I have tried to save and just download the tune to the Z06 and then download it back to my computer to verify it put the correct values in. It still changed the values as mention above.

  2. #2
    Junior Member
    Join Date
    Jun 2011
    Posts
    17

    Default

    Think i figured out my own question. .0078*2 = .0156. Therefor the resolution of the this pcm is only .0078. Thats makes giggle a little bit. Injector dynamics equipment is far above and beyond the resolution that this pcm can handle. Has anyone scaled the ve equation tables by 50%? Is it just as simple as dividing all of the values by 2?

  3. #3
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Close... not resolution but representation quantization, which is almost the same for smaller word widths

    http://forum.efilive.com/showthread....-will-not-save
    http://forum.efilive.com/showthread....tttfffffffffff!!!!!!!!!!!!!!!!

Similar Threads

  1. Changing E38 PCM
    By horst in forum E37, E38 & E67 PFI ECM's
    Replies: 3
    Last Post: July 19th, 2011, 09:14 AM
  2. small pulse adjust - 60Lb deka
    By fezz57 in forum Gen III V8 Specific
    Replies: 18
    Last Post: May 13th, 2010, 08:06 PM
  3. small pulse adjust {B4005}
    By acric5 in forum Gen III V8 Specific
    Replies: 8
    Last Post: October 22nd, 2009, 12:48 PM
  4. B4005 Small Pulse Adjust How does GM create this table?
    By onfire in forum Custom Operating Systems
    Replies: 44
    Last Post: December 2nd, 2008, 12:39 PM
  5. Small Pulse Adjust/Low Pulse Width Injector Offset
    By N0DIH in forum General (Petrol, Gas, Ethanol)
    Replies: 0
    Last Post: September 4th, 2007, 08:05 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
  •