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Thread: How to Modify calc_pid for 14.12 Stoich using PLX WB?

  1. #1
    Lifetime Member Chalky's Avatar
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    Default How to Modify calc_pid for 14.12 Stoich using PLX WB?

    Starting to play with EFILive again after about 18 month of inactivity.

    I was wondering if someone could modify my Calc_pid.txt file to incorporate the changes needed to allow my PLX WB use 14.12 Stoich for tuning?

    PLX WB using 0-5v, afr range 10-20, lambda .68 - 1.36

    TIA.
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    2015 Z06 A8

  2. #2
    Joe (Moderator) joecar's Avatar
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    Try this (attached).

    CALC.FUEL.AFR and CALC.BEN.

    If you want to log GM.EQIVRATIO instead of GM.AFR, then change CLC-00-110 to either of these:

    "{GM.EQIVRATIO} / {CALC.FUEL.EQR}"
    "{GM.EQIVRATIO} * {CALC.FUEL.LAM}"
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  3. #3
    Lifetime Member Chalky's Avatar
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    Thanks for the assistance. Really appreciated.

    What would be the advantage/difference of logging afr using GM.eqivratio vs gm.afr?
    Last edited by Chalky; April 25th, 2010 at 02:25 AM.
    2015 Z06 A8

  4. #4
    Lifetime Member mr.prick's Avatar
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    Quote Originally Posted by Chalky View Post
    What would be the advantage/difference of logging afr using GM.eqivratio vs gm.afr?
    Commanded AFR ≠ {B3601}

    Based off the numbers given:

    PHP Code:
    *CLC-00-001
    lambda       0.68      1.36         .3        
    "({EXT.AD1}*0.136)+0.68"

    *CLC-00-002
    AFR              9.6       19.2         .2      
    "({EXT.AD1}*1.9203)+9.602"

    *CLC-00-003            
    AFR            0.00      14.12       .2       
    "(14.12/{GM.EQIVRATIO})"
      
    *CLC-00-004
    lambda        0.00     1.00        .2        
    "(1/{GM.EQIVRATIO})"

    *CLC-00-005 
    factor          0.00      2.00        .2        
    "({CALC.LAM_PLX}/{CALC.LAMBDA})"

    *CLC-00-006 
    factor          0.00      2.00        .2        
    "({CALC.AFR_PLX1}/{GM.AFR})"

    ----------------------------------------------------------------------------------------------

    CALC.LAM_PLX1             F001     CLC-00-001      lambda       WO2-Analog       "Wide Band Lambda 1 - PLX1"

    CALC.AFR_PLX1           F002     CLC-00-002        AFR         WO2-Analog        "Wide Band AFR 1 - PLX1"

    CALC.AFR                     F003     CLC-00-003       AFR             Fuel                "Commanded AFR"

    CALC.LAMBDA              F004     CLC-00-004     lambda          Fuel              "Commanded Lambda"

    CALC.LAM_BEN_PLX1      F005     CLC-00-005      factor           Fuel               "Lambda BEN PLX"                  
     
    CALC.BEN_PLX1            F006     CLC-00-006      factor           Fuel               "AFR BEN PLX" 
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  5. #5
    Lifetime Member Chalky's Avatar
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    Thanks. I see the difference now.
    I modified the calc pid to use EQ for AFR. Is a space between expressions and divisor OK or needed?
    2015 Z06 A8

  6. #6
    Lifetime Member mr.prick's Avatar
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    I like to clean it up myself, no spaces and use brackets.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  7. #7
    Lifetime Member Chalky's Avatar
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    Appreciate the reply.
    2015 Z06 A8

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