Results 1 to 3 of 3

Thread: Checksum needed for just calibration changes?

  1. #1
    Fuel Injected!
    Join Date
    Nov 2021
    Posts
    43

    Checksum needed for just calibration changes?

    I'm looking for the final word on either or not the OS checksum dll file is actually required when making calibration changes. Looking through several xdfs many don't included any references to the OS checksum while some do and the dll is usually provided.

  2. #2
    Administrator
    Join Date
    May 2011
    Location
    Lakes Region, NH
    Age
    54
    Posts
    3,847
    Hi,

    I don't know how the checksum plugin works. If the file you are using has good checksums (there are multiple within an OBDII calibration) then they should work after programming. If you write the file then read it you can compare the files bit by bit to see if there are differences. If there are no differences, and you're using a known good file, I would guess the issue is not with the checksums.

  3. #3
    Fuel Injected!
    Join Date
    Nov 2021
    Posts
    43
    Thank you.

Similar Threads

  1. checksum
    By specialistas in forum TunerPro Tuning Talk
    Replies: 0
    Last Post: 07-20-2021, 12:30 AM
  2. Lt1 94 checksum correction
    By andyz28 in forum GM EFI Systems
    Replies: 6
    Last Post: 12-18-2018, 06:42 PM
  3. L33 Stock Calibration file needed
    By 96HawkCnvt in forum TunerCat OBDII
    Replies: 4
    Last Post: 06-25-2013, 10:01 PM
  4. Disabling Checksum
    By POZE in forum GM EFI Systems
    Replies: 7
    Last Post: 01-14-2013, 06:21 PM
  5. Checksum disable ('165), TP5
    By dyeager535 in forum GM EFI Systems
    Replies: 4
    Last Post: 07-24-2012, 06:32 AM

Bookmarks

Posting Permissions

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