Problem flashing map onto ECU.

Discussion in 'BMW Diagnostic, programming and software discussion' started by m3rosco, Sep 9, 2018.

  1. 9 Sep 2018 at 10:01 PM #1
    m3rosco

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    I have installed an ESS supercharger. I used their lead to do read the engine ECU and sent the file off to them. They then modified it and sent it back. I’ve now fitted the charger but can’t seem to get the new map to work. I’ve tried it three times now on two different laptops. It takes 20-30 minutes and says it’s 90 something per cent complete then it comes up with the following:

    Have emailed ESS and will wait to see what they say, but wondered if any of you clever folks had any ideas of what’s going on?!

    [​IMG]
     
  2. 10 Sep 2018 at 8:16 AM #2
    cossie1

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    Have you tweaked (various flashes) the ecu before ?
     
  3. 10 Sep 2018 at 8:39 AM #3
    m3rosco

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    Yes. Various times! Wondering if I’ve maxed out the flash counter. Do you know of the MSSFlasher program that can reset the counter? Could I use that to determine if I’ve maxed out the flash counter? And if I have could it reset it or is it too late once it’s gone that far?

    Thanks for your help!!
     
  4. 10 Sep 2018 at 8:41 AM #4
    m3rosco

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    Also, do you know if making tweaks using Martyn’s EcuWorx program count towards the flash counter?
     
  5. 10 Sep 2018 at 8:56 AM #5
    cossie1

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    Yes there is a counter, and yes using Martyn's tool add's to that flash counter (well when you flash the changes back it does anyway).

    You can check how many flash spots are left using INPA or MSSFlasher.

    But MSSFlasher will clear the counter for you.
     
    Last edited: Sep 10, 2018
  6. 10 Sep 2018 at 9:28 AM #6
    m3rosco

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    Cool! Thanks for that! Should it reset it even if it’s maxxed out though?! I’m not the cleverest where software and computers are involved!!
     
  7. 10 Sep 2018 at 9:48 AM #7
    cossie1

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    Yes it should be able to reset it even if already maxed out.
     
  8. 10 Sep 2018 at 1:04 PM #8
    m3rosco

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    Thanks for your help mate.

    Heard back from ESS. They said it could well be the flash counter maxed out and to try resetting it if it is the case. If it’s not that they’re blaming the ECU (previously converted to HP spec to run my CSL airbox with MAP sensor- MAP sensor is now removed and loom back to standard as per ESS’s recommendation). In their words “HP converted ECU’s can be a pain”!! They already knew this before I bought the charger and said it’s fine, but I just need to remove the mAP sensor and wiring. Will see what I can do later this afternoon.
     
  9. 10 Sep 2018 at 1:06 PM #9
    cossie1

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    No probs.
     
  10. 10 Sep 2018 at 3:50 PM #10
    m3rosco

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    No joy but then I don’t really know what I’m doing!

    [​IMG]
     
  11. 10 Sep 2018 at 3:58 PM #11
    cossie1

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    Because the ESS flasher failed, it might have soft bricked your ecu (as the flashing failed before it hit 100%).

    You could try writing your old tune to the dme, and hope it recovers it.

    But if the flash counter is full, then that will probably fail too, which means the only option is to get a bdm onto the ecu and bring it back to life that way.


    EDIT:

    I just read that you are running a CSL clone, have ESS sent you the correct file for a CSL clone ?

    They said to disconnect the Map sensor, which suggests that they have not, in which case flashing back the old tune file, should recover the ecu, but then you will still need use of a bdm to flash it back to standard software, before you can upload the ESS tune.
     
    Last edited: Sep 10, 2018

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