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Thread: Using EFILive (V5/V6) to capture Wide band O2 data

  1. #21
    EFILive Developer Site Admin Blacky's Avatar
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    Quote Originally Posted by LS1Nova
    Paul, I'm using the same thing as jnorris in the first post. Basically I need to use a different formula, but I am braindead and can't figure out how to do it.

    I'm using my analog output voltage to go into my a/c pressure sensor with V6.

    Your right my afr=v*1.6+10

    Thanks
    Frank
    So you're not using a FlashScan interface, and you are trying to hook your wide band via the A/C pressure sensor?

    Regards
    Paul

  2. #22
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    or would it be easier for me to convert the voltage in the a/c voltage pid, v*1.6+10 and log that?
    64 Chevy II, twin turbo 402 LS1, TH400, Dana 60.


  3. #23
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    thats correct

    Quote Originally Posted by Blacky
    So you're not using a FlashScan interface, and you are trying to hook your wide band via the A/C pressure sensor?

    Regards
    Paul
    64 Chevy II, twin turbo 402 LS1, TH400, Dana 60.


  4. #24
    EFILive Developer Site Admin Blacky's Avatar
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    Oh, I misunderstood your requirements - sorry.

    Use this calculated PIDs file:
    Note: There is no need to define the units V and AFR because they are already defined in the Program files\EFILive\V7\Configuration\sae_generic.txt file.

    Code:
    # ==============================================================================
    # 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
    #-------- ---------- -------- --------------------------------------------------
     
    # ==============================================================================
    # Add slot definitions here
    # --------------------------------
    # See sae_generic.txt for more information on "SLOT" formats
    #
    #Units             Low          High      Fmt  Expression
    #------------ ------------- ------------- ---- ---------------------------------
    *CLC-00-001 
    V                  0.0          5.00       .1  "{GM.ACPS}"
    AFR               10.0          18.0       .2  "{GM.ACPS}*1.6+10"
    
    # ==============================================================================
    *PRN - Parameter Reference Numbers
    # --------------------------------
    # See sae_generic.txt for more information on the *PRN section
    #
    #Code                      PRN  SLOT         Units            System           Description
    #------------------------- ---- ------------ ---------------- ---------------- ---------------------------------
    CALC.AFR                   F001 CLC-00-001   "AFR,V"          Fuel             "Wide band AFR"
    (Edited to correct {GM.ACP} to {GM.ACPS} as per LS1Nova's post further down)

  5. #25
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    I copied that formula and I get an error code when I open efilive now.

    err_cinfig/92
    units afr not found

    and I can't connect now due to this error

    err_noinit/121
    not initialised, call obiil nit()first

    Frank
    64 Chevy II, twin turbo 402 LS1, TH400, Dana 60.


  6. #26
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    Quote Originally Posted by LS1Nova
    I copied that formula and I get an error code when I open efilive now.

    err_cinfig/92
    units afr not found

    and I can't connect now due to this error

    err_noinit/121
    not initialised, call obiil nit()first

    Frank
    Got this fixed, I just ereased all the afr's in the formula. but it ends up giving me a number in the 350 range for 14.7 when I log.
    64 Chevy II, twin turbo 402 LS1, TH400, Dana 60.


  7. #27
    EFILive Developer Site Admin Blacky's Avatar
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    Make sure you are using the latest version of EFILive - I strongly recommend upgrading to V7.2.2 if you have not already done so. It's free - even if you are still using an AutoTap interface.
    http://www.efilive.com/upgrade.html

    Meanwhile you can add the AFR units to your calc_pids.txt file like this:
    Code:
    # ==============================================================================
    # Units
    # -------------------
    # See sae_generic.txt for more information on the *UNITS section
    
    *UNITS
    #Code     System     Abbr     Description
    #-------- ---------- -------- -------------------------------------------------------------
    #Fuel
    #----------
    AFR       None       AFR      "Air Fuel Ratio"
    
    # ==============================================================================
    # Add slot definitions here

  8. #28
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    Thsnks for all the help Blacky.

    I ended up figuring it out, here's what I used. It just seemed more simple to me.

    # Calculated
    # ----------------
    #Units Low High Fmt Expression
    #------------ ------------- ------------- ---- ---------------------------------
    *CLC-00-001
    V 10.0 18.0 .1 "({GM.ACPS}*1.6+10)"

    # ================================================== ============================
    *PRN - Parameter Reference Numbers
    # --------------------------------
    # See sae_generic.txt for more information on the *PRN section
    #
    #Code PRN SLOT Units System Description
    #------------------------- ---- ------------ ---------------- ---------------- ---------------------------------
    CALC.AFR F001 CLC-00-001 "V" Fuel "Wide band AFR"
    64 Chevy II, twin turbo 402 LS1, TH400, Dana 60.


  9. #29
    EFILive Developer Site Admin Blacky's Avatar
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    Good idea, I forgot about {GM.ACPS} (the sensor voltage).
    However, that will show up with units of "V".
    You can make the units show up as AFR by adding them as I showed a few posts ago. Then just change BOTH V's to AFR.

    Paul

  10. #30
    EFILive Developer Site Admin Blacky's Avatar
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    So the correct calc_pids.txt file should look like this:

    WARNING - check that the units AFR do not exist in the file:
    Program Files\EFILive\V7\configuration\sae_generic.txt
    If that file already contains the AFR units definition then do not include the AFR units definition in calc_pids.txt

    Code:
    # ==============================================================================
    # 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
    #Code     System     Abbr     Description
    #-------- ---------- -------- -------------------------------------------------------------
    #Fuel
    #----------
    AFR       None       AFR      "Air Fuel Ratio"
    
    #Code     System     Abbr     Description
    #-------- ---------- -------- --------------------------------------------------
     
    # ==============================================================================
    # Add slot definitions here
    # --------------------------------
    # See sae_generic.txt for more information on "SLOT" formats
    #
    #Units             Low          High      Fmt  Expression
    #------------ ------------- ------------- ---- ---------------------------------
    *CLC-00-001
    V                  0.0          5.00       .1  "{GM.ACPS}"
    AFR               10.0          18.0       .2  "{GM.ACPS}*1.6+10"
    
    # ==============================================================================
    *PRN - Parameter Reference Numbers
    # --------------------------------
    # See sae_generic.txt for more information on the *PRN section
    #
    #Code                      PRN  SLOT         Units            System           Description
    #------------------------- ---- ------------ ---------------- ---------------- ---------------------------------
    CALC.AFR                   F001 CLC-00-001   "AFR,V"          Fuel             "Wide band AFR"

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