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Thread: EEC Tuner Error Message

  1. #1
    Join Date
    Aug 2002

    EEC Tuner Error Message


    Chip Version: 5.1
    EEC Computer: X1A2
    EEC Tuner Software Version: 2.08

    Problem: When attempting to 'Retrieve Modification' I receive this exact
    Base Modification Checksum Mismatch Error
    To check to make sure my connection is OK I can download all.eec and
    retrieve modification all.eec with no problem. It is when I attempt to
    load any other program; then retrieve it is when I receive the error.
    When connecting it to my car it will not start. Any help please?

  2. #2
    Join Date
    Apr 2002
    New Jersey

    What are you using it on...

    That does not sound like a correct processor code.

    I do know that the 92-93 SC's won't accept the version 5.2 tuner. Could be a problem with that.

    I suggest that you change the checksum value to "0" which turns the check engine function off. Then try it again.

    Are you modifying a already programmed tuner or are you new to this???

    Does the other downloads work???

    Try the following:

    Go into the processor code you have.

    Type"ALL (Hit return) END"

    This will clear the tuner and see if you get that back on "retrieve Modifications"


  3. #3
    Join Date
    Aug 2002
    Yes, I can download all.eec without a problem. I am attempting to download a Dave Dalke tune into it again. It used to work just fine until I took it to a place to get it 'tuned'. Now it does not work. He ~~~~ed it up good. I will attempt to do what you explained. Thanks

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