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Thread: 1994 GMC C6000 Topkick C6H042 6.0 L V-8 Gas 225 gross HP 366 cu. in. Engine ADX??

  1. #16
    Electronic Ignition!
    Join Date
    Apr 2017
    Posts
    10
    Source File: C:\Program Files\CATS\11-24-17.bin
    Print Date: 11/26/2017



    ECM SWITCH TABLE

    X Err 24, Vech Speed Err enable, X=Enabled
    X Err 31, Governor Diag. X=Enabled
    0 Err 32, EGR Error Enable, X=Enabled
    X Err 42, EST Err enable, X=Enabled
    X Err 43, ESC Err enable, X=Enabled


    ECM CONSTANTS

    Initial Spark 7 Deg.
    Main Spark Bias 0 Deg.
    Maximum Spark Advance 42.2 Deg.
    Maximum Spark Retard -3.9 Deg.
    Knock Retard Enable Speed Threshold 2 MPH
    Knock Retard Enable RPM Threshold 1600 RPM
    Knock Retard Enable Cool. Temp Threshold -0.5 Deg. C
    RPM to Bypass Power Enrich. Delay 5600 RPM
    Power Enrichment Mode Delay 60 Sec's
    Base Pulse Width Constant 160 Const.
    Cold Closed Loop Delay Timer 120 Sec
    Warm Closed Loop Delay Timer 30 Sec
    Warm Closed Loop Timer Cool Temp Thresh. 69 Deg. C
    Closed Loop Min. Coolant Temp. Threshold 40 Deg. C
    Minimum MAP To Enable BLM 18.1 Kpa
    Maximum MAP To Enable BLM 101.9 Kpa
    Max RPM for BLM 5500 RPM
    Maximum BLM 172
    Miniimum BLM 84
    Speed To Enable Open Loop Idle 4 MPH
    TPS To Enable Open Loop Idle 2.3 % TPS
    Minimum Air Fuel Ratio for Open Loop 14 AFR
    Maximum Air Fuel Ratio for Open Loop 13 AFR
    EGR On, (TPS) 2 % TPS
    EGR Off, (TPS) 3.1 % TPS
    EGR On (Eng Speed) 1400 RPM
    EGR Off (Eng Speed) 1600 RPM
    EGR On, (Low MAP) 28.1 Kpa
    EGR Off, MAP, (Low MAP) 34 Kpa
    EGR Off, (High MAP) 98.9 Kpa
    EGR On, (High MAP) 97.8 Kpa
    Min. Coolant Temp. To Enable EGR 115 Deg. C
    Idle RPM Adder - A/C On 0 RPM
    IAC Park Down Position 145 Steps
    Differential IAC For P/N to Drive 0 Steps
    IAC Motor Park to Run Delay 0.3 Sec.
    Min. IAC Adder for A/C On 8 Steps
    Max. IAC Adder for A/C On 25 Steps
    Maximum IAC Value 145 Steps
    Number of Cylinders 8
    PROM ID 6275
    Target Governor RPM 5700 RPM
    Governor Disable RPM 5650 RPM
    Target Governor Vehicle Speed 90 MPH
    Target Governor Vehicle Speed Hysteresis 2 MPH
    Governor Overspeed Light Enable RPM 6000 RPM


    Main Spark Advance

    RPM MAP (Kpa)
    30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
    400 23.9 23.9 23.9 23.9 23.9 23.9 23.9 23.9 23.9 23.9 20.0 17.9 15.1 12.0 9.8
    600 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 17.9 15.1 12.0 9.8
    800 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 17.9 15.1 12.0 9.8
    1000 28.1 28.1 28.1 28.1 28.1 28.1 28.1 27.1 26.0 23.9 20.0 17.9 16.9 15.1 14.1
    1200 29.9 35.9 35.9 35.9 35.9 33.0 30.9 28.8 26.0 23.9 22.1 20.0 19.0 16.9 16.2
    1600 29.9 40.1 40.1 39.0 38.0 35.2 33.0 29.9 28.1 26.0 23.9 22.1 21.1 20.0 17.9
    2000 25.0 41.1 41.1 40.1 39.0 36.9 34.1 32.0 29.9 28.1 26.0 23.9 22.1 20.0 17.9
    2400 25.0 41.8 41.8 41.8 41.1 39.0 35.9 35.2 34.1 30.9 28.1 25.0 22.9 21.1 19.0
    2800 25.0 43.9 43.9 42.9 41.8 40.1 38.0 36.9 35.9 33.0 29.9 27.1 25.0 22.9 20.0
    3200 25.0 45.0 45.0 42.9 41.8 41.8 40.1 39.0 36.9 34.1 30.9 28.8 27.1 25.0 21.1
    3600 25.0 46.1 46.1 45.0 43.9 42.9 41.8 41.1 39.0 35.9 33.0 29.9 28.1 26.0 22.9
    4000 25.0 46.1 46.1 46.1 45.0 43.9 42.9 41.8 40.1 36.9 34.1 30.9 28.8 27.1 23.9
    4400 25.0 46.1 46.1 46.1 45.0 43.9 42.9 41.8 40.1 36.9 34.1 30.9 28.8 27.1 23.9


    Base Coolant Temp. Spark Adv. Correction Vs. MAP

    Deg. C MAP (Kpa)
    40 30 20 10 0
    -28 20.03906 20.03906 20.03906 20.03906 20.03906
    -16 9.84375 15.82031 15.82031 15.82031 15.82031
    -4 9.84375 11.95313 13.00781 13.00781 13.00781
    8 9.84375 8.08594 9.84375 9.84375 9.84375
    20 9.84375 7.03125 7.03125 7.03125 7.03125
    32 4.92188 7.03125 7.03125 7.03125 7.03125
    44 4.92188 5.97656 5.97656 5.97656 5.97656
    56 4.92188 4.92188 4.92188 4.92188 4.92188
    68 0.00000 0.00000 0.00000 2.81250 2.81250
    80 -3.86719 -3.86719 -3.86719 -3.86719 0.00000
    92 -3.86719 -3.86719 -3.86719 -3.86719 0.00000
    104 -2.10938 -2.10938 -2.10938 -3.16406 -3.16406
    116 -2.10938 -3.16406 -3.86719 -3.86719 -3.86719


    Power Enrichment Spark Advance Vs. RPM

    RPM Deg. Added
    800 0.0
    1200 0.0
    1600 3.2
    2000 3.2
    2400 3.2
    2800 3.2
    3200 1.1
    3600 1.1


    Knock Retard Attack Rate Vs. RPM

    RPM Deg/msec
    400 0.14
    800 0.14
    1200 0.14
    1600 0.14
    2000 0.16
    2400 0.16
    2800 0.16
    3200 0.18
    3600 0.18
    4000 0.20


    Max Knock Retard Vs. RPM (in P. E.)

    RPM Deg. Retard
    800 6.0
    1200 8.1
    1600 8.1
    2000 8.1
    2400 8.1
    2800 8.1
    3200 8.1
    3600 8.1
    4000 8.1


    Knock Retard Recovery Rate Vs. RPM

    RPM %/msec
    400 8.7
    800 8.7
    1200 8.7
    1600 8.2
    2000 8.2
    2400 8.2
    2800 8.2
    3200 7.2
    3600 8.2
    4000 8.2


    Max Knock Retard Vs. MAP

    MAP (Kpa) Deg. Retard
    60 6.0
    70 8.1
    80 8.1
    90 8.1
    100 8.1


    Start Up Spark Advance Vs. Coolant Temp.

    Deg. C Deg.
    Cold 19.7
    24.0 19.7
    49.7 14.8
    80.5 9.8
    Hot 9.8


    Start Up Spark Advance Decay Mult. Vs. Coolant Temp.

    Deg. C Mult.
    Cold 58.6
    24.0 58.6
    49.7 58.6
    80.5 29.3
    Hot 29.3


    Main Fuel Table, % Volumetric Efficiency

    RPM Kpa MAP
    20 30 40 50 60 70 80 90 100
    0 42.2 45.3 47.7 50.0 53.1 58.6 63.3 67.2 69.5
    400 44.5 48.0 52.0 55.9 60.2 64.8 69.5 72.7 74.6
    800 49.2 52.0 58.6 63.7 68.4 71.9 75.0 79.3 81.6
    1200 52.3 61.7 67.6 72.3 77.0 78.9 81.6 83.6 81.6
    1600 53.5 64.5 72.7 76.6 80.5 85.2 86.3 86.3 82.8
    2000 54.7 66.8 75.0 79.3 83.6 88.7 90.2 90.6 83.6
    2400 56.3 69.9 77.3 80.9 84.0 90.2 92.2 91.4 89.5
    2800 59.4 70.7 78.1 82.4 86.3 91.0 91.0 93.8 89.8
    3200 57.8 69.5 78.5 82.4 86.3 90.6 90.6 93.0 93.0
    3600 59.4 69.5 78.5 83.2 85.5 89.1 89.1 92.2 91.4
    4000 59.4 69.9 78.9 84.4 85.5 87.9 88.7 89.8 84.8
    4400 59.4 68.0 76.2 80.5 83.2 85.9 85.9 85.9 81.6
    4800 58.2 64.1 72.7 74.2 76.2 82.4 85.2 84.8 79.7


    TPS Threshold For Fast Power Enrich.

    RPM % TPS
    800 50.0
    1200 50.0
    1600 50.0
    2000 80.1
    2400 80.1
    2800 80.1
    3200 80.1
    3600 80.1
    4000 80.1


    BPW Vs. EGR Vs. Air Flow

    gm/sec %EGR
    80 92 104 116 128
    0.0 134 134 134 134 134
    6.3 131 132 132 133 133
    12.5 129 130 131 131 132
    18.8 126 127 129 130 130
    25.0 123 125 127 128 129
    31.3 120 123 125 127 128
    37.5 118 121 124 125 127
    43.8 115 118 122 124 125
    50.0 112 116 120 122 124
    56.3 109 114 118 121 123
    62.5 107 112 117 119 122
    68.8 104 109 115 118 120
    75.0 101 107 113 116 119
    81.3 98 105 111 115 118
    87.5 96 103 110 113 117
    93.8 93 100 108 112 115
    100 90 98 106 110 114


    TPS Threshold For Normal Power Enrich.

    RPM %TPS
    800 50.0
    1200 50.0
    1600 50.0
    2000 60.2
    2400 60.2
    2800 60.2
    3200 60.2
    3600 60.2
    4000 60.2


    Power Enrich. Air Fuel Ratio Vs. RPM

    RPM AFR
    800 12.5
    1200 12.6
    1600 12.6
    2000 12.4
    2400 12.6
    2800 12.2
    3200 12.6
    3600 12.5
    4000 12.7


    Accel. Enrichment Vs. Differential TPS

    %TPS usec Added
    0.0 244
    3.1 366
    6.3 610
    9.4 916
    12.5 1526
    15.6 2502
    18.8 3845
    21.9 5615
    25.0 7568


    Accel. Enrichment Vs. Diff. MAP

    KPA usec Added
    0 122
    20 305
    40 488
    60 977
    80 1465


    Accel. Enrich. Temp. Correction Vs. Coolant Temp.

    Deg. C Mult.
    Cold 7.50
    -7.0 6.00
    6.5 4.81
    16.0 4.19
    24.0 3.59
    31.0 3.31
    37.3 3.00
    43.7 2.69
    49.7 2.41
    56.5 2.09
    63.5 1.81
    71.5 1.31
    80.5 1.13
    92.0 1.00
    108.5 1.00
    138.5 1.00
    Hot 1.00


    Open Loop AFR Vs. Coolant Temp.

    Deg. C AFR
    -40 9.0
    -28 10.0
    -16 11.0
    -4 11.5
    8 12.0
    20 12.5
    32 12.7
    44 13.0
    56 13.0
    68 13.0
    80 13.0
    92 13.0
    104 13.0
    116 13.0
    128 13.0
    140 13.0
    152 13.0


    Open Loop Air Fuel Ratio Vs. MAP

    MAP (Kpa) AFR
    20 2.5
    30 2.5
    40 2.0
    50 2.0
    60 2.0
    70 1.5
    80 1.0
    90 0.0
    100 0.0


    AFR at Startup (Choke)

    Deg. C Air Fuel Ratio
    -40 6.0
    -8 5.0
    6 4.0
    16 3.5
    24 3.0
    31 3.0
    37 3.0
    43 3.0
    50 3.0
    56 3.0
    63 2.5
    71 2.0
    81 2.0
    92 2.0
    109 2.0
    130 2.0
    152 2.0


    Choke Air Fuel Ratio Multiplier Vs. Coolant

    Deg c % Mult.
    -40 96.9
    -28 96.9
    -16 96.9
    -4 96.9
    8 96.9
    20 96.9
    32 96.9
    44 96.9
    56 96.9
    68 96.9
    80 96.9
    92 96.1
    104 96.1
    116 96.1
    128 96.1
    140 96.1
    152 96.1


    Crank Air Fuel Ratio Vs. Coolant Temp.

    Deg C AFR
    -40 1.0
    -28 1.6
    -16 2.3
    -4 3.1
    8 4.0
    20 4.5
    32 5.0
    44 5.5
    56 6.0
    68 7.0
    80 8.0
    92 8.0
    104 8.0
    116 8.0
    128 8.0
    140 8.0
    152 3.0


    IAC Steps Vs Coolant Temperature

    Deg C Steps
    152 25
    140 25
    128 25
    116 25
    104 25
    92 25
    80 25
    68 25
    56 25
    44 35
    32 50
    20 70
    8 79
    -4 88
    -16 97
    -28 113
    -40 145


    Target Idle RPM Vs Coolant Temp.

    Deg C RPM
    COLD 800.0
    -4 800.0
    20 800.0
    44 800.0
    68 750.0
    92 750.0
    116 750.0
    140 750.0
    HOT 750.0


    EGR Spark Advance Vs. % EGR

    % EGR Deg. Added
    0 0.0
    6.25 0.0
    12.50 0.0
    18.75 0.0
    25.00 0.0
    31.25 0.0
    37.50 0.0
    43.75 0.0
    50.00 0.0
    56.25 0.0
    62.50 0.0
    68.75 0.0
    75.00 0.0
    81.25 0.0
    87.50 0.0
    93.75 0.0
    100.0 0.0


    % EGR Vs. Load Vs. RPM

    RPM MAP (Kpa)
    40 50 60 70 80 90 100
    800 29.7 29.7 29.7 29.7 29.7 29.7 29.7
    1200 32.0 35.2 35.2 35.2 35.2 35.2 35.2
    1600 35.2 39.8 44.9 50.0 50.0 50.0 50.0
    2000 39.8 44.9 50.0 60.2 69.9 79.7 79.7
    2400 44.9 55.1 60.2 69.9 79.7 79.7 79.7
    2800 50.0 60.2 69.9 79.7 79.7 79.7 79.7
    3200 55.1 69.9 79.7 79.7 79.7 79.7 79.7
    3600 55.1 69.9 79.7 79.7 79.7 79.7 79.7
    4000 55.1 69.9 79.7 79.7 79.7 79.7 79.7


    EGR % Correction Vs. Load Vs. EGR Duty Cycle

    Vacuum (Kpa) EGR D.C. (%)
    30 40 50 60 70 80 90 100
    0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
    2.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
    5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
    7.5 0.0 3.1 12.5 18.8 18.8 18.8 18.8 18.8
    10.0 0.0 6.3 18.8 31.3 43.8 43.8 50.0 50.0
    12.5 0.0 9.4 25.0 37.5 50.0 56.3 59.4 59.4
    15.0 0.0 12.5 31.3 43.8 56.3 62.5 68.8 68.8
    17.5 0.0 12.5 31.3 43.8 59.4 65.6 71.9 75.0
    20.0 0.0 12.5 31.3 43.8 62.5 68.8 75.0 81.3
    30.0 0.0 15.6 34.4 56.3 75.0 81.3 93.8 93.8
    40.0 0.0 15.6 37.5 56.3 81.3 87.5 93.8 93.8
    50.0 0.0 18.8 37.5 56.3 81.3 87.5 93.8 93.8
    60.0 0.0 18.8 37.5 56.3 81.3 87.5 93.8 93.8
    Attached Files Attached Files

  2. #17
    Electronic Ignition!
    Join Date
    Apr 2017
    Posts
    10
    dave, how do you know the maximun you can raise base pulse width constant to. is ther a forumla to convert bpwc to millseconds.

  3. #18
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    3,406
    If possible, keeping the injector BPW close to the original value is best. I would consider using an injector with a higher flow rate to keep the BPW near the original value. Injector offsets and injector parameters are very important. I would closely compare the higher flow injector parameter with the original injector parameters.

    For example, you might be able to use 305 injectors at 35psi to keep the BPW close to the original value. I STRONGLY recommend flow testing 305 injectors at 25, 30, 35, & 40 PSI to see which pressure is best for keeping the BPW near the original value.

    I don't know of a formula that would convert BPWC to Milliseconds.

    dave w

  4. #19
    Fuel Injected!
    Join Date
    Feb 2013
    Location
    Euless, TX
    Posts
    1,467
    Quote Originally Posted by dave w View Post
    If possible, keeping the injector BPW close to the original value is best. I would consider using an injector with a higher flow rate to keep the BPW near the original value. Injector offsets and injector parameters are very important. I would closely compare the higher flow injector parameter with the original injector parameters.

    For example, you might be able to use 305 injectors at 35psi to keep the BPW close to the original value. I STRONGLY recommend flow testing 305 injectors at 25, 30, 35, & 40 PSI to see which pressure is best for keeping the BPW near the original value.

    I don't know of a formula that would convert BPWC to Milliseconds.

    dave w
    The big trucks and some full size vans use TBI injectors resembling what come in a Holley TBI similar to the front wheel drive TBI cars with a single barrel TBI.

  5. #20
    Electronic Ignition!
    Join Date
    Apr 2017
    Posts
    10
    Here is the problem I have . I have standard products tj32 injectors and can’t find any info on flow rating or and Info on bigger injectors to fit my throttle body. Not sure if the old style 2 prong injectors will fit in my tbi unit. I would change the whole tbi but mine has a governer attached

  6. #21
    Electronic Ignition!
    Join Date
    Apr 2017
    Posts
    10
    wonder if anybody has put the holley 522-43 injectors in the gm throttle body? there both gm maxi style injectors.

  7. #22
    Fuel Injected!
    Join Date
    Jan 2017
    Posts
    31
    My understanding is that they don't fit the GM injector pod. You'll need to install the injectors in a Holley pod. Might take some fiddling to make the Holley pod fit on a GM throttle body. I've done GM pod on Holley TB and it needed some fiddling.

  8. #23
    Electronic Ignition!
    Join Date
    Apr 2017
    Posts
    10
    Have you actually tried it. I checked the dimensions on mine and they appear to be the same as Holley ones.

  9. #24
    Fuel Injected!
    Join Date
    Jan 2017
    Posts
    31
    Never mind...I'm thinking of something totally different!

  10. #25
    Electronic Ignition!
    Join Date
    Apr 2017
    Posts
    10
    Thanks for your time and response. Before I bought two new injectors I was hoping someone else had already did it. I see u can get pods too so if the Holley injectors don’t fit I can get the Holley pod. If u got the gm pod to fit a Holley base I hope I can do the opposite. Thanks again

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