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Thread: January 2011 update

  1. #1
    Lifetime Member GMPX's Avatar
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    Thumbs up January 2011 update

    Good news to report for the new year.
    For those that are following development progress you might know that I am currently in New Zealand working along side Paul finalising the read and reflash process for the 2006+ 5.9L ECM (though I was told today some 2005's might be using this ECM too).
    Anyway, the good news is we have got the in house beta software to the point of being able to bench read and reflash at least three of our test ECM's without any issues. Including recovery from purposely failed flashes.
    Some people might be aware of the problem these ECM's have where they will loose the VIN and other important data after they have been programmed. This is actually a bug in the ECM itself, it's not the fault of any handheld programmers, not even Cummins (or Tech Authority seems to have a real solution to fix it either). However, we have come up with a reflash method that will restore the ECM's contents (that is usually lost) to a 100% duplicate of what it was prior to the flash.
    For the rest of the week we need to test the licensing for the Cummins, try to get the Scantool talking correctly with the ECM and retest many GM controllers because we have made a lot of changes to the firmware and PC software. So if all goes well our beta testers will be tuning some Cummins ECM's by mid to late January. Beta testers, you will get an Email over the next couple of days explaining what is going on with the beta program.

    Cheers,
    Ross
    Last edited by GMPX; January 4th, 2011 at 10:17 PM.
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  2. #2
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    Whoo Hooo, Thanks for the update Ross!! Cant wait.....
    06 3500
    EFI by Rob @ ATP

  3. #3
    Lifetime Member GMPX's Avatar
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    Another good development day today with the 5.9L ECM as good as done. We also got the 6.7L ECM programming done, but it's slow to read (explanation below).

    Read Times:

    5.9L = about 9 to 10 minutes.
    6.7L = about 35 minutes (yes, it's horrid).

    Flash Time:
    5.9L = 6 minutes (this is a 2006 CM849B with internal and external flash, earlier models will be faster).
    6.7L = 6 minutes.

    As a comparison, we can read GM's new E39 ECM in about 2 minutes and full flash it in 3:30, yet the E39 has three times the flash memory size of the 5.9L Cummins ECM. The E39 is running our own read and write bootloaders which is why it's so fast, we have full control.
    We can't do this on any of the Cummins ECM's, so we are constrained by what Cummins built in to the ECM for reading / flashing and it's slow.
    We were able to get the 5.9L Flash time down to about 5:30 but it was too unreliable, even just on a test bench, so we changed it back to the slower (more reliable) CAN message speed rate. Again, it's not us, we can flash GM controllers over 3Mb in size in 3 minutes. the 5.9L only has about 1Mb to flash.
    With the 5.9L ECM it is necessary to reflash the entire ECM every time, for the GM guys who are familiar with a 'cal' flash or 'full' flash, there is no such thing with the Cummins ECM, it has to be a full flash each time.

    It important for people to understand the read and flash times can't be controlled by EFILive like we can on the GM controllers, this is just how it is with the Cummins ECM's, which is unfortunate.

    Cheers,
    Ross
    Last edited by GMPX; January 6th, 2011 at 06:06 PM. Reason: Changed flash time data
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  4. #4
    Lifetime Member bobo's Avatar
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    10 minute flash times sure beat stacking $3k worth of tuners together!
    2005 Twin Turbo Dmax/Allison Ext. Cab Short Box 4X4
    Best 1/4 11.8 @ 118+ on #2 only

    Twisted Diesel Tuning-The leader in Duramax Tuning Services and soon to offer Common Rail Cummins Tuning!

    Bobotune at rocketmail dot com

  5. #5
    Lifetime Member dansdieselp's Avatar
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    Agreed. EFI Live will save customers a lot of money plus actually make there truck run how they want it to. I hope the 6.7 flash time doesn't take a half hour each time though especially if it's a small change that has to be made.

  6. #6
    Lifetime Member GMPX's Avatar
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    We are going to look at the flash speed on the 5.9L again today, we saw a delay in our CAN traces last night that if eliminated should save a minute or two.
    On the 6.7L, I doubt it will be 30 mins per flash, it's only that slow to read because Cummins really limit how much data can be read per message request. Hopefully they also didn't goof up the built in flash process like the 5.9L that erases the entire ECM per flash. I should know by the end of today....
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  7. #7
    Lifetime Member GMPX's Avatar
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    Flash time fixed, the 5.9L is down to just on 6 minutes, that is about as good as it can get and still be reliable.
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  8. #8
    Lifetime Member Dmaxink's Avatar
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    Great Job Ross! I'm more excited than the fat kid at the candy store!
    -Kory

    I'm out of ideas? Nah trick... When in doubt, 0xFFFF it out!

    http://www.PPEI.com/

  9. #9
    Lifetime Member GMPX's Avatar
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    6.7L Flash is completed too. EFILive takes 6 minutes, much faster than the Tech Authority 14 minute flash

    This doesn't mean we are about to release 6.7L tuning, but at least it's done.
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  10. #10
    Lifetime Member dansdieselp's Avatar
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    Great to hear Ross.

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