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Thread: Tuning options for Dodge Mopar

  1. #31
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    hopefully the owner of this page is still around....

    http://www.jtec.info/index.php?title..._Code_Overview

    also have this, i can join and grab the zip file if you think it would help?

    http://chipgods.com/showthread.php?t=55
    Last edited by 34blazer; 12-28-2012 at 11:21 PM.
    '86 Grand National

  2. #32
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    this may help...

    http://www.jtec.info/index.php?title...ated_jtec2.png


    http://www.jtec.info/index.php?title...ated_jtec1.png




    "These processors have a motorola debug interface (BDM interface) onboard... there is no header for it on the jtec... but someone with good soldering skills could solder up an interface to it directly to the cpu... that would get a datastream."
    '86 Grand National

  3. #33
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    the early OBD2(96 and 97?) GM PCM units are said to have the same port, and it was supposedly capable of dumping the BIN and possibly writing a new one in?
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  4. #34
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    i have no idea, i was hoping you could shed some light on that?
    '86 Grand National

  5. #35
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    bdm will allow you to directly command the cpu... so you would be able to read and write the bin... although a better way to do that would be to hook a logic analyser up to a sct tuner and see how they do it over the obd port... cause these controllers are sealed up tight and i doubt your average person is gonna crack one open and solder directly to the cpu to get access to the bdm interface...

  6. #36
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    at that point, i'm officially beyond what i know of the 6816s.... one could look up what kind of PROM is being used and see what the programming sequence for it looks like, then write out a program to be uploaded via the BDM link and have the 6816 do that...

    http://www.diy-efi.org/gmecm/ecm_info/32bit/dumpflash/

    there's the link i remember. it's one option anyways.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  7. #37
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    WHAM! right into a brick wall. LOL
    '86 Grand National

  8. #38
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    sent a couple of emails out to see if they can help, also joined delcohacking and posted there. shot in the dark, hopefully i can gather more people. Thanks for your help so for Rob, Enlight22.
    '86 Grand National

  9. #39
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    well this is it so far lol. im going to study on disassembly and commenting so i can help out more, its just going to take much longer. and from what has been said this far, figuring out a way to upload it via ALDL is another mountain, damn.


    http://en.wikipedia.org/wiki/Freescale_68HC16


    also, where can i get myself a free copy of IDA?
    Last edited by 34blazer; 12-30-2012 at 06:50 PM.
    '86 Grand National

  10. #40
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    aldl is a gm specific thing afaik. we will have to upload via bdm or by reverse engineering the method to do it over the obd port.

  11. #41
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    Quote Originally Posted by enlight22 View Post
    aldl is a gm specific thing afaik. we will have to upload via bdm or by reverse engineering the method to do it over the obd port.
    i always thought OBD II laws stated all vehicles have to have accessible data through the ALDL? ill have to find a pinout to verify
    '86 Grand National

  12. #42
    Super Moderator Six_Shooter's Avatar
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    The Acronym "ALDL" is GM specific, for "Assembly Line Diagnostic Link". This is most commonly used in reference to teh OBD1 Delco ECMs and PCMs.

    The OBD2 data port is most commonly refered to as an "OBD port", or "On Board Diagnostic port."
    The man who says something is impossible, is usually interrupted by the man doing it.

  13. #43
    EFI GearHead ! EagleMark's Avatar
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    Quote Originally Posted by 34blazer View Post
    i always thought OBD II laws stated all vehicles have to have accessible data through the ALDL? ill have to find a pinout to verify
    The OBDII laws and PIDS are all the same for emmissions, this made repairs at shops much easier, but each manufacturer has ther own Enhanced versions as well.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
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  14. #44
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    another common term for the port that came around right before OBD2 was implimented was "data link connector" (DLC).

    it's all relatively synonymous if you don't look too far into it.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  15. #45
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    OK thanks for the heads up, apologies for being ignorant lol. Our comm support is at the squadron with us so Im going to start bugging them to see if i can come up with something. Either way it looks like we are stuck for know. Its going to be awhile before I can learn enough to start helping but Im not giving up on this. Too stubborn...
    '86 Grand National

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