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Thread: Calc.VET: correcting MAF and calculating VE (in single log)

  1. #561
    Senior Member djv86's Avatar
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    What table "xxxxx" is the command afr for what map pressure

  2. #562
    Joe (Moderator) joecar's Avatar
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    Commanded EQR:
    - OL: B3605 or B3647 for COS.
    - PE: B3618.



    Do use EQR rather than AFR (set tunetool fuel units to EQR), you will find it easier...
    CL will be EQR 1.00, and PE should be EQR 1.17 for NA, and EQR 1.25 for boost (regardless of the fuel you run)

    ( you view the tunetool tables in EQR, you log EQR and/or Lambda from wideband )

    ( you do have to set the stoich AFR in table B3601 )

    ( for example, stoich AFR's: gasoline 14.7, E10 14.2, E85 9.6 )

  3. #563
    Senior Member djv86's Avatar
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    The truck in working on doesn't go into PE like it should. It stays in CL under WOT and removes fuel under boost when the whipple ecm is adding fuel. I've got another thread somewhere with the tune posted and data logging file if you would be up for examining it for me ?

  4. #564
    Joe (Moderator) joecar's Avatar
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    Post your tune file/log files.

    Point me to your other thread...

  5. #565
    Senior Member djv86's Avatar
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    Quote Originally Posted by joecar View Post
    Post your tune file/log files.

    Point me to your other thread...
    https://forum.efilive.com/showthread.php?t=25108

  6. #566
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    using this method, if the car will be open loop, i need to modify the CALC.PIDS as said above. wich one will be the input data to correect the maf? and wich one will be the input data to calculate the VE MAP

  7. #567
    Joe (Moderator) joecar's Avatar
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    If you're running OL (no CL) you'll be using WO2BEN only (no LTFTBEN)...

    so you must edit calc_pids.txt as follows:

    change CLC-00-200 from this:
    *CLC-00-220
    factor 0.5 1.5 .4 "iff({CALC.CL}, {CALC.LTFTBEN}, {CALC.WO2BEN})"
    to this (see the red zero):
    *CLC-00-220
    factor 0.5 1.5 .4 "iff(0, {CALC.LTFTBEN}, {CALC.WO2BEN})"
    ( This forces CALC.SELBEN to always use CALC.WO2BEN for corrections. )

    Use Notepad to make the edit (when you exit Notepad click Yes to save the changes).

    You now proceed as said in post #1 (use CALC.SELBEN map to correct MAF, use CALC.VET map to make a new VE).

  8. #568
    Joe (Moderator) joecar's Avatar
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    Also, do this (very important):

    Quote Originally Posted by Blacky View Post
    Make sure you also download and install the obdiiV7.dll attachment that is explained in Issue 5 here:
    Known-issues-with-Feb-09-2015-release-of-the-EFILive-software-and-firmware

    Regards
    Paul

  9. #569
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    When doing this tuning I have followed all procedures and Im getting corrected MAF and VE table as expected. The only thing that is throwing me off is how choppy my AFRs are looking while logging. Im assuming this is because I'm doing CL tuning using this method. The up and down swings correlate perfectly to the switching of the O2 sensors. Would it be better to do this tuning using OL so that fueling isnt so choppy? Or is it a function of the wideband I'm using (AEM analog)? Or does it not matter as it is averaging out over time?

  10. #570
    Joe (Moderator) joecar's Avatar
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    Post some log files.

    LTFT's are a filtered from STFT which are filtered from NBO2 swings (i.e. they should not look choppy).

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