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Thread: 6.0 ficm tuning

  1. #1
    Tuner in Training
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    6.0 ficm tuning

    Does anyone have any info on Ficm tuning? Where is a good place to start when messing with the Ficm

  2. #2
    Tuner in Training
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    I would like this info as well.

  3. #3
    You adjust the pulse width in the FICM, just like any other diesel. Increase the pulse to make more power, you really only need to touch 2 tables.
    FICM.jpg

  4. #4
    Quote Originally Posted by BigCE View Post
    You adjust the pulse width in the FICM, just like any other diesel. Increase the pulse to make more power, you really only need to touch 2 tables.
    FICM.jpg
    whats your thoughts on a timing calculator for the 6.0, i havent seen one yet and was going to make one modeling from the early dmax's understood that we are huei vs common rail, but we are still dealing with pulse width vs pressure vs timing

  5. #5
    Quote Originally Posted by crash01 View Post
    whats your thoughts on a timing calculator for the 6.0, i havent seen one yet and was going to make one modeling from the early dmax's understood that we are huei vs common rail, but we are still dealing with pulse width vs pressure vs timing
    I think you would see some massive changes if you used a calculator. The timing numbers seem odd for the 6.0s not sure if we are missing maps or what. For example at WOT at high RPM it calls for 5 deg of timing? Seems low, the entire map seems odd. My assumption is we are missing modifiers.

  6. #6
    the only problem i see would be adjusting for hydraulic latency depending on oil temp and oil type, which is done somewhat in the ecm.... guess ill start to attempt to make one modeling from the dmax calculator, ill test on my personal truck before i release anything tho, guess its time to learn the wonderful excel spreadsheets , but yes Im totally agreeing that we are missing modifiers or maybe even entire extra timing maps,

  7. #7
    factory "supplied" ficm file shows injector pulswidth maxing at 1670us, dmax guys are running upwards of 2900us-3000us on max effort tunes, looks like we might be leaving alot on the table, and im sure this has been discussed somewhere, but i wonder if the ficm values are the hard limit, or if the pcm "mass fuel desired" wins?

  8. #8
    Quote Originally Posted by crash01 View Post
    factory "supplied" ficm file shows injector pulswidth maxing at 1670us, dmax guys are running upwards of 2900us-3000us on max effort tunes, looks like we might be leaving alot on the table, and im sure this has been discussed somewhere, but i wonder if the ficm values are the hard limit, or if the pcm "mass fuel desired" wins?
    As far as I know the ECM just asks the FICM for a quantity of fuel. The FICM uses the pulse width map to determine how long to hold the injectors open. If there was a limit it would be in the FICM.

    I have no idea what a safe limit is or how far guys have pushed them, I just know the tune i made seems healthy enough but not over the top. I have no plans to push any harder.

  9. #9
    Tuner in Training
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    Does anyone have the procedure to enable FICM? The software isn't giving me the option to license the FICM (4.2.12). I have read that a relay needs to be removed to stop potential damage to the injectors. Is there a procedure that everyone is using for tuning these diesels out there? I have read a lot here but, there doesn't seem to be the same for diesel as there is for gas for a step by step tuning. Thanks for any and all help.
    Update* I guess diesel support is still in the Beta. Still not sure about the FICM relay?
    Last edited by givittua; 03-28-2019 at 04:04 PM.

  10. #10
    Hook up your cable and click read, then click gather info. Should show you three different controllers the ECM the FICM and the TCM. Pick which ones you want to read either only one or all or whatever but depending on what you choose you will have to licence the file accordingly, as when you go to flash you dont have a choice it will flash all of the controllers if that's the way you read them. I like to do them individually and build separate files.

    When flashing only the FICM that is when you need to remove the injector relay, I only had to do this once because I built separate files and only needed to flash the ecm multiple times, so plan ahead.

  11. #11
    Tuner in Training
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    The software was hanging on to my original scan. All set now Thank you.
    Last edited by givittua; 04-03-2019 at 07:22 AM.

  12. #12
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    Quote Originally Posted by BigCE View Post
    You adjust the pulse width in the FICM, just like any other diesel. Increase the pulse to make more power, you really only need to touch 2 tables.
    FICM.jpg
    So what would be the rule of thumb here...Does one add say 5% or 10% to the entire table or what exactly? There is a lot of this stuff that I don't quite understand yet.

  13. #13
    HPT Employee Eric@HPTuners's Avatar
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    Quote Originally Posted by BigCE View Post
    I think you would see some massive changes if you used a calculator. The timing numbers seem odd for the 6.0s not sure if we are missing maps or what. For example at WOT at high RPM it calls for 5 deg of timing? Seems low, the entire map seems odd. My assumption is we are missing modifiers.
    Create a ticket with support, and we can look into anything that might be missing.
    Eric Brooks
    HP Tuners, LLC