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  1. #1
    Electronic Ignition!
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    Target Idle RPM

    "BFXB" 1991 ZR1 stock bin.

    The Target RPMs table has:

    Deg C RPM
    -40 05
    -28 03
    -16 03
    -4 59
    8 1B
    20 08
    32 02
    44 00
    56 38
    68 68
    80 60
    .. ..
    152 60

    What do those hex values in the RPM column indicate - IAC counts, tach speed?

  2. #2
    RIP EagleMark's Avatar
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    SHould be RPM. Looks like the XDF/Mask is not set right. Post up the xdf file.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  3. #3
    Electronic Ignition!
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    XDF currently in use
    Attached Files Attached Files

  4. #4
    RIP EagleMark's Avatar
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    $8E is for a 1990 Corvette ZR1 with LT5 engine

    Your BFXB is for a 1991 Corvette ZR1 with LT5 engine and $AF.
    Attached Files Attached Files

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  5. #5
    Electronic Ignition!
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    Mark ... its been an unbelievably lousy day for me, but you just saved it. thanks man.

  6. #6
    Electronic Ignition!
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    I am comparing the stock BFXB with a custom bin using TPRO5. Strange, the Max Allowable BLM in BFXB is 160 which seems normal, but the custom bin has it at 5. The Min Allowable is 115, but the custom min is 60.

    How can the max be less than the min as in the custom? Why? Thanks for the help, still learning.

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