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Thread: Hex Editor Forum

  1. #1
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    Hex Editor Forum

    You should have a Hex Editor Forum

  2. #2
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    I did this up a few months back on another forum, but it got lost on a server upgrade. I hope can remember everything correctly. jimmyblue may like this
    These are the complete fuel segments for 2001 F-Body and a 2001 Express Van. As you can see they are not even close to matching





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    This is just the section that applies to the Fuel Tank.
    Everything after this point will have effect on other functions. You can see that the rest of the segment above has a lot of differences
    I outlined the differences in the fuel tank portion

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    This is the beginning of the segment and when I changed this it had no effect on the fuel gauge operation.

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    This is the end of the fuel tank portion of the fuel segment. This is the area that controls the fuel gauge

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    This is what I came up with for a customer. He has a 96 Camaro with a 98 IPC in it, a 5.3L, a custom fuel cell and a 0411. This is what I ended up with

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    This is the Fuel Sender Input to the PCM for a 98 F-Body's Calibration

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    This is a 2002 Van Fuel Sender Input to the PCM
    This would be the table that would need to be inverted or flipped if you didn't use the Camaro Segment


    This is a 2002 F-Body Fuel Sender Input to the PCM.

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    These are the 2 setting that need to be changed to get the 98 Fuel Gauge to work any of the newer PCM's
    2002 Camaro OE

    2002 Camaro with Van Settings
    I will tell you that this is not the 98 Fuel Gauge Hz setting I use

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    Dave I hope you have time to look this over. I hope it sheds some light on Hex Editing.

  11. #11
    Super Moderator dave w's Avatar
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    Quote Originally Posted by Caleditor View Post
    Dave I hope you have time to look this over. I hope it sheds some light on Hex Editing.
    I'm using EFI Live. I have looked at some of the hex code, but without the conversions I'm not sure what I'm looking at.

    dave w

  12. #12
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    I can find the VIN number and pcm serial number in hex!

    But yeah,that's about it.

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    Quote Originally Posted by Playtoy_18 View Post
    I can find the VIN number and pcm serial number in hex!

    But yeah,that's about it.
    YES
    The VIN, BCC, ESN/VCMID, and other information is all located together. The OSID Checksum and CVN's are located together also

  14. #14
    Fuel Injected!
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    What would be the result if you replaced the 12 digit serial number with all zero's or all one's in your experience?Anything negative?

  15. #15
    Super Moderator Six_Shooter's Avatar
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    Quote Originally Posted by Caleditor View Post
    You should have a Hex Editor Forum
    Why?

    If something about hex, or editing in hex comes up, it's because it's relevant to a particular subject that already has an existing forum.

    Even general Hex editing already has a forum, "Other EFI systems and related topics", Alternatively if it's more of a tutorial, or "how-to" as it were, there is the "Fuel Injection Writeups Articles and How to New and Old" forum as well.
    The man who says something is impossible, is usually interrupted by the man doing it.

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