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Thread: Logging FPR through EGR.

  1. #1
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    Default Logging FPR through EGR.

    I followed the instructions to log FPR through my egr on my LS1B (05 silverado) I have adjusted the calc.pids as shown in the tutorial. I just save the file back in the same folder with the same name correct? Does it look right? Thanks for your time.





    # ================================================== ============================
    # File details
    # ------------
    #
    # This section defines various details about the file format.

    *FILE

    #Parameter Value Description
    #---------- ---------------- ---------------------------------------------------
    VERSION 7.1.1 File version
    DECSEP . Decimal separator used in this file



    # ================================================== ============================
    # Units
    # -------------------
    # See sae_generic.txt for more information on the *UNITS section

    *UNITS

    #Code System Abbr Description
    #-------- ---------- -------- -------------------------------------------------------------
    PSI Imperial PSI "Pounds Per Square Inch"


    # ================================================== ============================
    # Add slot definitions here
    # --------------------------------
    # See sae_generic.txt for more information on "SLOT" formats
    #
    #Units Low High Fmt Expression
    #------------ ------------- ------------- ---- --------------------------------------------------------------
    *CLC-00-001
    PSI 0.00 100.00 .2 "({GM.EGRS}*25)-12.5"

    # ================================================== ============================
    *PRN - Parameter Reference Numbers
    # --------------------------------
    # See sae_generic.txt for more information on the *PRN section
    #
    #Code PRN SLOT Units System

  2. #2
    Joe (Moderator) joecar's Avatar
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    Yes, save the file in the same folder.


    BUT: your file as you posted above is not complete... after the last line ("# Code PRN SLOT Units System") you should have a line like this:

    CALC.FPR F001 CLC-00-001 PSI Fueling "Fuel Rail Pressure"



    BTW: psi (lower case) is already defined, so you can skip defining PSI, and just use psi (lower case).


    NOTE: after the CALC.FPR line, you should leave at least 2 blank lines (i.e. hit ENTER twice) before saving the file.


    ALSO: .1 precision is maybe more suitable than .2 (e.g. 58.0 psi vs 58.00 psi).


    ALSO: do you want FPR in kPa...?
    Last edited by joecar; February 1st, 2018 at 08:56 PM.

  3. #3
    Joe (Moderator) joecar's Avatar
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    If you want FPR in kPa also...



    *CLC-00-001
    psi 0.0 100.0 .1 "{GM.EGRS}*25-12.5"
    kPa 0.0 700.0 .1 "{CALC.FPR.psi}*6.895"

    . . .


    CALC.FPR F001 CLC-00-001 "psi,kPa" Fueling "Fuel Rail Pressure"

  4. #4
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    Default

    Thank you. I tried to avoid asking simple questions on the forum but i'm trying my best to learn everything. I've spent hours reading through this forum trying to learn. I don't really need to read kpa, PSI should be ok. Just want to make sure fuel pressure rises along with the boost.

  5. #5
    Joe (Moderator) joecar's Avatar
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    Feel free to ask (if you don't understand something, it's always better to ask).





    Please make sure you have at least two blank lines at the end of your calc_pids.txt file.

  6. #6
    Joe (Moderator) joecar's Avatar
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    Also, do this:

    remove the FPR manifold-reference hose, and measure rail pressure... this is your base pressure.

    ( and then remember to reconnect the manifold reference hose )

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