Results 1 to 8 of 8

Thread: 91 corvette xdf file issue

  1. #1
    Electronic Ignition!
    Join Date
    Feb 2020
    Age
    41
    Posts
    16

    91 corvette xdf file issue

    i have the burn2 and have read and saved the bin. when i open the file on tunerpro with various different xdf files there all 0. the car does run but is not a stock tune. i havent used tunerpro for like 15 years.
    Attached Files Attached Files

  2. #2
    Fuel Injected!
    Join Date
    Jul 2019
    Location
    Orange, CA
    Posts
    757
    Well I mean...your answer is right there in the attachment. There is no way your EPROM data is 1 byte.

    There’s nothing wrong with the XDF and everything wrong with the BIN you saved. Or, more accurately, how you saved your BIN. Try again from there.
    1990 Corvette (Manual)
    1994 Corvette (Automatic)
    1995 Corvette (Manual)

  3. #3
    Electronic Ignition!
    Join Date
    Feb 2020
    Age
    41
    Posts
    16
    thank you so much i will start by how to use flash and burn.

  4. #4
    Electronic Ignition!
    Join Date
    Feb 2020
    Age
    41
    Posts
    16
    well i changed how i read the chip and now have a bin with code in it. but i dont know what xdf file was used so the files just load numbers.
    Attached Files Attached Files
    • File Type: bin 2.bin (64.0 KB, 4 views)

  5. #5
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    6,279
    I'm thinking the 91 Vette uses ECM part number 1227727, which is a 32K chip.

    The 32K Chip uses Hexadecimal (Hex) addresses, 000000 to 007FFF To read a 32K chip starting address is 000000 / ending address 007FFF

    Flash & Burn Information: http://static.moates.net/manuals/FlashAndBurn.pdf

    dave w

  6. #6
    Electronic Ignition!
    Join Date
    Feb 2020
    Age
    41
    Posts
    16
    the chip i have out of the car is not oem it says 27sf512 and was attached to a moates adapter. i think i got the data off the chip with the second try. but how can i find the xdf file if i dont know who wrote the bin. i wont be able to get data into the correct tables.

  7. #7
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    6,279
    The 27SF512 chip is 64K. The original chip is 32K.

    To use the 27SF512 chip with the 1227727 computer, the 27SF512 chip must be programmed with OFFSETS: http://support.moates.net/programmin...using-offsets/

    The offset for programming the 32K .bin file into a 27SF512 chip is address 008000 to 00FFFF.

    Maybe the Burn 2 can be "configured" to read the 32K .bin file programmed into the 27SF512 chip using starting address 008000 to 00FFFF????

    Perhaps your up to speed with "binary editing" and can edit the 32K .bin file from the full 64K .bin file from the 27SF512 chip?

    Link to the .xdf file for the 1227727 Corvette computer: http://www.gearhead-efi.com/Fuel-Inj...Information-8D The link includes information for the 1227730 which is electrically identical to the 1227727. Chips are interchangeable 1227727 / 1227730.

    dave w

  8. #8
    Fuel Injected!
    Join Date
    Dec 2013
    Location
    Marianna, FL
    Posts
    108
    I have reorganized the $8D XDF to be easier to read and follow. Here is a copy to try out.
    Attached Files Attached Files

Similar Threads

  1. 90 Corvette heat soak issue
    By sgtcjt71 in forum GM EFI Systems
    Replies: 6
    Last Post: 07-27-2017, 02:51 AM
  2. 1990 highly modified 434 corvette tune issue
    By bjankuski in forum GM EFI Systems
    Replies: 1
    Last Post: 07-16-2015, 08:40 AM
  3. 98 LS1 CORVETTE FILE
    By MYLTWON in forum OBDII Tuning
    Replies: 1
    Last Post: 05-16-2015, 07:23 PM
  4. need 96-97 lt1 corvette m6 file
    By doctortuned in forum TunerCat OBDII
    Replies: 4
    Last Post: 01-08-2014, 10:23 AM
  5. 91 Corvette ADX issue
    By deepa in forum GM EFI Systems
    Replies: 0
    Last Post: 08-31-2013, 11:35 PM

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
  •