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Thread: VR4 Successfully Flashed

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    VR4 Successfully Flashed

    OK, done!! I have successfully flashed the VR4 ECU. YES, my 98 VR4 MT ECU can be flashed without problem, and I can drive it without any problem.

    Here is the config:

    Software: ECUFlash 1.41.2483
    OS: Windows XP
    Cable: OpenPort 2.0 cable
    ROM ID: 20030011


    Simple test has been done, ie, set the RPM Limit to 3000rpm, and flashed the ROM, and test drove the car and then really cut at around 3000rpm


    VR4 ---- Happy Tuning

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    Thats excellent news.. Awesome

    Have some Rep
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    Question

    what do you mean by "flashed"...?????

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    So far, I found there are 5 different type of ECU that VR4 used with the following ID:

    ROM ID:
    20030010
    20030011
    20030013

    23810003
    23810004

    Seems that the xml files are a bit messy for the VR4, so, I group information all together from different forum, and try to make the xml filename more "official" similar to EVO files.

    If you have the "vr4_MD340288.xml" and "vr4_MD340289.xml", you can delete them, and download the following files instead.

    Sorry, due to the file size limitation, please rename the definition file from .xml.txt to .xml, and simply unzip the "vr4base1.zip".
    Attached Files Attached Files
    Last edited by kc427; 04-05-2009 at 05:42 PM. Reason: Updated vr4_23810004.xml

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    Quote Originally Posted by gallvr4
    what do you mean by "flashed"...?????
    Search is your friend
    Try Googling

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    Note: Please keep in mind, currently, if the CPU is 7203F, the ECU cannot be flashed at the moment.

    BTW, I will try to find the 2byte load for the car, if success, I will post the address

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    Here's some rep too
    Want your car tuning? Here's my pricing
    Have questions about performance upgrades and ECU tuning? Before PM'ing me, Check this thread first
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    Well done, good for you, let us know how you get on with different parameters, cheers
    Updating Soon!! 1998 Legnum VR4, fully serviced every 4500 miles. Fully Amsoil'd. Falken 453's, EVO 8 FQ320 rear diff.

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    Congrats,

    So ok when you can do this on the pre 98 ECU, how do we acutally go about flashing it?

    Some instructions of what to do with the files and various things would be great.

    Cheers

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    Thumbs up More More More info please!!!!!

    Quote Originally Posted by kc427
    OK, done!! I have successfully flashed the VR4 ECU. YES, my 98 VR4 MT ECU can be flashed without problem, and I can drive it without any problem.

    Here is the config:

    Software: ECUFlash 1.41.2483
    OS: Windows XP
    Cable: OpenPort 2.0 cable
    ROM ID: 20030011


    Simple test has been done, ie, set the RPM Limit to 3000rpm, and flashed the ROM, and test drove the car and then really cut at around 3000rpm


    VR4 ---- Happy Tuning
    Hi there,
    Can you go into a bit more detail about which processor is in the ECU that you have managed to flash. is there any reason why an Auto engine ECU can not be flashed.
    Please put all the info down, like which ECU part numbers can be flashed. or let us know which processor can be flashed. and which configuration it is used in, as you have done with the Manual Trans ECU in your 98 VR4 is it a facelift.

    Thanks in Advance

    Bye for Now!

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    oooh excellent! have some rep! like the guys said i too would like some more info on how to flash mine? or maybe its something BenH could help with?


    Mike
    Still here somewhere........

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    Not wishing to nit pick, but have you disconnected the battery and reconnected it?
    I believe the ECU will store changed parameters until power loss, but then resets itself. If it will keep it's parameters past a battery disconnect....we're in business!!!!

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    Quote Originally Posted by Turbo_Steve
    Not wishing to nit pick, but have you disconnected the battery and reconnected it?
    I believe the ECU will store changed parameters until power loss, but then resets itself. If it will keep it's parameters past a battery disconnect....we're in business!!!!
    THe ecu cannot restore factory settings after being flashed. Stop with that misconception. That is the advantage and disadvantage of flashing. It doesn't loose the settings.

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    OK, what you need is, of course, a PC computer, with Windows XP(recommended). If you have Vista, I don't know there will be any compatibility issue or not with the flash tool.

    Anyway, first, you need a OpenPort 2.0 cable, search from internet, or simply buy from Here. Remember, 1.3 cable cannot flash the ECU.

    Next, the software tool you need is, ECUFlash 1.41 or later, and you can download it for free, simply Click Here. After you install it, you need the definition file for the ROM, just download all the XML files I attached before, and then put into the folder inside ECUFlash.

    For the ECUFlash usage, you can search around from internet, and you can find a lot of information.

    Caution: Unless you know what you are doing, otherwise, you may blow your engine if you tune the ECU incorrectly.

  15. #15
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    Quote Originally Posted by Davezj
    Hi there,
    Can you go into a bit more detail about which processor is in the ECU that you have managed to flash. is there any reason why an Auto engine ECU can not be flashed.
    Please put all the info down, like which ECU part numbers can be flashed. or let us know which processor can be flashed. and which configuration it is used in, as you have done with the Manual Trans ECU in your 98 VR4 is it a facelift.

    Thanks in Advance
    As far as I know, the 7202 processor can be flashed, but not the 7203. Also, some pre-facelift has 7201, and I heard that it cannot be flashed too. It is hard to know it is flashable or not by the ECU number, eg, MD340288 has metal case and plastic case, and I guess, the processor may not be the same.

    By the way, my ECU is MD340288 plastic case.

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    That appears to be correct. I cannot re-flash any of the 3 MH7203 processors I have from 1999,2001 and 2002 cars
    Last edited by Kenneth; 05-05-2009 at 03:34 AM.

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    Quote Originally Posted by scientist
    THe ecu cannot restore factory settings after being flashed. Stop with that misconception. That is the advantage and disadvantage of flashing. It doesn't loose the settings.
    You are right, from the program point of view, these settings are constant, and will be used whenever program instruction needs to. Imagine, there is a box, so, whenever you walk pass the box, you open the box, and check the number inside or read the number inside the box, and then you close it and keep walking. So, whatever you put inside the box, you will get what you put.

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    Quote Originally Posted by Kenneth
    That appears to be correct. I cannot re-flash any of the 3 MH7202 processors I have from 1999,2001 and 2002 cars
    Cannot reflash?

  19. #19
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    Quote Originally Posted by kc427
    Cannot reflash?
    Sorry, my typo... they were all MH7203 processors. Have edited my post.

  20. #20
    kc427's Avatar

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    Quote Originally Posted by Kenneth
    Sorry, my typo... they were all MH7203 processors. Have edited my post.
    Yes, I have searched from internet, the 7203 cannot be flashed yet. 7203 is also used on EVO 6 TME.

    BTW, do you know what ID is it for the 7203? Is it 23810003 or 23810004? As I know, these 2 ID is from late model of FL, ie, 2001. I don't know the ECU number, maybe it is start with MR578xxx. Do you have the ECU number for your 3 MH7203? Maybe it's helpful for other members to identify they can flash their VR4 or not by see the ECU number first.

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