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Thread: E67 O2 Sensor timing

  1. #1
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    Default E67 O2 Sensor timing

    Hello -
    Been fighting with a low RPM surge\buck while driving on 2010 ZR1 that only has headers. Car is running well in open loop tuning for MAF but as soon as we go back into closed loop the surging\bucking starts back up again.

    Since the O2 sensors Have been moved further down stream is there a way to slow down the closed loop response like on older ECM's?

  2. #2
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    What operating system?
    "All that is needed for the triumph of evil is that good men do nothing..."

  3. #3
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    OS number is 12635947


    Quote Originally Posted by Highlander View Post
    What operating system?

  4. #4
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    Can you post the file?
    "All that is needed for the triumph of evil is that good men do nothing..."

  5. #5
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    Quote Originally Posted by Highlander View Post
    Can you post the file?
    ZR1 Stock File 7-18-17 1251.ctz

  6. #6
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    Code:
    
    [B9544]
    ;         Description
    ;         ---------------------------------------------------------------------------------------------------------------------------------
    DESC.001 = STFT Base Delay VS Airflow Mode
    
    ;
    ;         Seg Caption                          Major            Minor            Vis Dis 2D Grp
    ;         --- -------------------------------- ---------------- ---------------- --- --- -- ---
    VIEW =      2 "STFT Base Delay VS Airflow Mode"         "Fuel"     "O2 Trims"                1  2   0   0
    ;
    ;         Address(es)                      BitOff Bits Typ Inv
    ;         -------------------------------- ------ ---- --- ---
    ADDR =     1DFEC8                                0   16 SNM   0
    ;
    ;         Units    Factor         Offset Prec MinLimit MaxLimit MinUser  MaxUser
    ;         -------- -------------- ------ ---- -------- -------- -------- --------
    SI_SLOT =   ms  0.125             0   0   0      3000   0    3000 
    ;         Body           Col            Row
    ;         -------------- -------------- --------------
    ULABELS = .              .              .
    ;
    ;         Enumerations
    ;         -------------------------------------------------------------------
    SI_ENUM = .
    IM_ENUM = .
    ;
    ;         Units            Labels
    ;         ---------------- -------------------------------------------------------------------
    SI_COL =    "Delay"          "ms"  
    IM_COL =  
    SI_ROW =  AirFlowMode         "0,8,16,24,32,40,48,56,64"              
    IM_COL =  
    ; ===============================================================================
    
    [B9545]
    ;         Description
    ;         ---------------------------------------------------------------------------------------------------------------------------------
    DESC.001 = STFT Proportional Gain Vs mV
    
    ;
    ;         Seg Caption                          Major            Minor            Vis Dis 2D Grp
    ;         --- -------------------------------- ---------------- ---------------- --- --- -- ---
    VIEW =      2 "STFT Proportional Gain Vs mV"         "Fuel"     "O2 Trims"                1  2   0   0
    ;
    ;         Address(es)                      BitOff Bits Typ Inv
    ;         -------------------------------- ------ ---- --- ---
    ADDR =    1DFEA4                                0   16 SNM   0
    ;
    ;         Units    Factor         Offset Prec MinLimit MaxLimit MinUser  MaxUser
    ;         -------- -------------- ------ ---- -------- -------- -------- --------
    SI_SLOT =   ms  0.000030517            0   3   0      2   0    2
    ;         Body           Col            Row
    ;         -------------- -------------- --------------
    ULABELS = .              .              .
    ;
    ;         Enumerations
    ;         -------------------------------------------------------------------
    SI_ENUM = .
    IM_ENUM = .
    ;
    ;         Units            Labels
    ;         ---------------- -------------------------------------------------------------------
    SI_COL =    .      
    IM_COL =  
    SI_ROW =  O2Error         "0.0,0.5,1.0,1.5,2.0,2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.0,6.5,7.0,7.5,8.0"              
    IM_COL =  
    ; ===============================================================================
    
    
    [B9546]
    ;         Description
    ;         ---------------------------------------------------------------------------------------------------------------------------------
    DESC.001 = STFT Proportional max vs airflow mode
    
    ;
    ;         Seg Caption                          Major            Minor            Vis Dis 2D Grp
    ;         --- -------------------------------- ---------------- ---------------- --- --- -- ---
    VIEW =      2 "STFT Proportional Max vs airflow mode"         "Fuel"     "O2 Trims"                1  2   0   0
    ;
    ;         Address(es)                      BitOff Bits Typ Inv
    ;         -------------------------------- ------ ---- --- ---
    ADDR =    1DFE60                                 0   16 UNM   0
    ;
    ;         Units    Factor         Offset Prec MinLimit MaxLimit MinUser  MaxUser
    ;         -------- -------------- ------ ---- -------- -------- -------- --------
    SI_SLOT =   Factor  0.000030517            0   3   0      2   0    2
    ;         Body           Col            Row
    ;         -------------- -------------- --------------
    ULABELS = .              .              .
    ;
    ;         Enumerations
    ;         -------------------------------------------------------------------
    SI_ENUM = .
    IM_ENUM = .
    ;
    ;         Units            Labels
    ;         ---------------- -------------------------------------------------------------------
    SI_COL =    "Delay"          "ms"  
    IM_COL =  
    SI_ROW =  AirFlowMode         "0,8,16,24,32,40,48,56,64"              
    IM_COL =  
    ; ===============================================================================
    "All that is needed for the triumph of evil is that good men do nothing..."

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