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Thread: CM849 for a Cummins swap.

  1. #1
    Potential Tuner
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    Jun 2024
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    CM849 for a Cummins swap.

    I am very new to this so excuse my ignorance. I am doing a Cummins Swap. My engine has a cm849 out of an 2006 that came out of an automatic truck. I believe I need a stock file for a manual truck? Does anyone have a stock file?

  2. #2
    Advanced Tuner
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    Aug 2021
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    Indianapolis Area
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    Did you try finding it in the repository?
    I personally dont have it...

    DodgeBoy.
    Email: [email protected]
    YouTube: https://www.youtube.com/@dodgeboy2785

  3. #3
    Potential Tuner
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    Jun 2024
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    I'm very new to this. I didn't know there was a repository. I found an 05 model that should have the same cm849 ecm. I confused by it though. I looked at the file and when you click the transmission icon on editor there are fields on it referring to line pressure. So is it a manual trans file or an auto file? Also Ive read on the forum that hpt won't allow you to reflash an ecm to make it a manual ecm vs the auto ecm. There are threads saying you have to use anther tuner to flash stock file and then you can edit that file with hpt.
    Last edited by Diesel Daddy; 3 Weeks Ago at 04:43 PM.

  4. #4
    Advanced Tuner
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    Yes, it is correct as far as I know:
    1. Have it re-flahsed (I would suggest Sound German)
    2. Have it re-tuned with HP Tuners

    Let me know if you need any support.
    Thanks.

  5. #5
    Quote Originally Posted by Diesel Daddy View Post
    I'm very new to this. I didn't know there was a repository. I found an 05 model that should have the same cm849 ecm. I confused by it though. I looked at the file and when you click the transmission icon on editor there are fields on it referring to line pressure. So is it a manual trans file or an auto file? Also Ive read on the forum that hpt won't allow you to reflash an ecm to make it a manual ecm vs the auto ecm. There are threads saying you have to use anther tuner to flash stock file and then you can edit that file with hpt.
    05 calibrations cannot be used on an 06 ecm, they are different. with the 5.9 calibrations they all have transmission parameters in them regardless if its a manual transmission or automatic, generic calibrations with some changes in parameters between the them.

  6. #6
    No need to swap the OS over, i've tuned tons with no issues
    2010 F-350 03 5.9/848ecm, built 5R110, 30% over sticks, 10mm pump, 64mm Stealth Turbo
    2008 F-350 03 5.9
    Fumminstuning.com