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Thread: Conflict Between Tutorials

  1. #1
    Member
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    Default Conflict Between Tutorials

    Seems to be a conflict between the Custom OS and 2/3 Bar Tutorial and AutoVE Tutorial:

    Custom OS under Going MAFless:
    Going MAFless
    When fitting a 2 or 3-bar MAP sensor you must disable the MAF sensor. It is possible to leave the MAF sensor in place. This will need to be done on the 85mm MAF as the Intake Temp Sensor is located in the MAF housing. Alternatively, you could relocate the IAT using on older style IAT sensor. Even with the MAF still in place, the PCM must be forced to ignore the MAF signal.
    To disable the MAF sensor:
    Set the Engine Diagnostics->Engine Diagnostics->MAF->Parameters:
    • {C2901} MAF High Frequency Fail 1: 1Hz
    • {C2902} MAF High Frequency Fail Limit: 1
    • {C2907} MAF Test Min Engine Speed: 300 RPM
    • {C2908} MAF Test Min Run Time: 0.1 seconds
    Set the Engine Diagnostics->Engine DTC processing Enablers:
    • P0101 ‘C’ Non Emissions
    • P0102 ‘C’ Non Emissions
    • P0103 ‘C’ Non Emissions
    Set the Engine Diagnostics->Engine DTC MIL Enablers:
    • P0101 ‘No MIL’
    • P0102 ‘No MIL’
    • P0103 ‘No MIL’

    AutoVE say:
    12. Open calibration {C6002} " Engine DTC MIL Enablers" Set P0101, P0102, and P0103 to No MIL.
    13. Open calibration {C2901} “MAF High Frequency Fail 1" Set it to 0
    14. Open calibration {C2902} “MAF High Frequency Fail 2" Set it to 0
    15. Open calibration {C2903} “MAF High Frequency Fail Limit" Set it to 1
    16. Pop the hood and unplug the MAF sensor (see note)
    Note: If your MAF has a 5-pin plug, your IAT sensor is built into the MAF. You will need to make provisions to get the IAT signal into the PCM. Various write-up’s on this can be found at: www.efilive.com and www.ls1tech.com

    Problem 1: {C2902} title does not agree between the two tutorials. Which is correct?

    Problem 2: Is step 15 {C2903} in AutoVE Tutorial correct or the {C2902} step in Custom OS?

    I tend to believe the Custom OS for a boosted application. Make those settings, leave the MAF in place, and skip the AutoVE steps 12-16.

    Also, do not perform AutoVE Tutorial "Return the PCM to Closed Loop, Speed Density" or "Verification" for boosted applications running the Custom 2/3 Bar OS.

    Is this correct?

    Lonnie
    2002 EB Coupe, MN6
    Xtreme TTi Twins @8psi, Dual A-pilar gauges - fuel&boost, x-pipe, Borla Straight Twin Oval from Cats on back, Hurst Short Throw, CCW 3 piece rims - 18x9.5/275-35 and 18x11.5/335-30 Pilot Sports

    Drive it like you stole it!!!!!

  2. #2
    Senior Member VortechC5's Avatar
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    Default

    I followed the first set of instructions to disable the MAF for AutoVE and it worked fine. Your car will not have C2902. Mine didn't.

    I also did not have to disconnect my MAF. I disabled it and it and it threw the appropriate code. If you have not relocated your IAT you will need to leave your MAF hooked up.

    Mark
    02 C5 Coupe - LS7, TSP 265 LS7 heads, ARH, Z06 cat-back, HREs, 3.73 gears, Wilwood brakes, DeWitts radiator

    15 C7 Z5 1 Coupe - stock for now

    12 Avalanche - tune, Corsa Touring

  3. #3
    Lifetime Member BowlingSS's Avatar
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    I noticed that also. I just used the Custom OS write-up.

    Bill
    2011 Camaro 2SS/RS L99 RJT
    CAI, Inc. Cold Air Induction;ADM Scoop
    Rx Catch Can;Rx Breather;Roto-Fab Washer Container
    VMax Ported RJT Throttle Body
    XSPower Headers and XSPower 3" Exhaust System
    Elite Engineering Tunnel Brace,
    Gorilla Wheel Lock System;
    Tinted Windows 35%;EFILive Tune

  4. #4
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    About time this stuff started to make since, at least a little. :roll:

    Lonnie
    2002 EB Coupe, MN6
    Xtreme TTi Twins @8psi, Dual A-pilar gauges - fuel&boost, x-pipe, Borla Straight Twin Oval from Cats on back, Hurst Short Throw, CCW 3 piece rims - 18x9.5/275-35 and 18x11.5/335-30 Pilot Sports

    Drive it like you stole it!!!!!

  5. #5
    EFILive Developer Site Admin Blacky's Avatar
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    Default

    The tutorials have been updated - thanks for pointing out those issues.
    Paul

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