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Thread: ADX file edit for WBO2 sensor

  1. #1
    Fuel Injected!
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    XDF file edit for WBO2 sensor

    A201 $E6 TP5 is set up with WBO2 must be 0v = 10.0 AFR, 5v - 20.0 AFR.
    Can I edit the ADX file to a WBO2 that has an output of 0V = 7.35 AFR and 5V = 22.39 AFR or 1.1V = 14 AFR and .1V = 15 AFR?
    Last edited by Dom; 03-28-2017 at 06:04 AM.
    1993 Chevy Blazer TBI Vortec long block 5.7
    16168625 BDJZ 46mm TB 18 PSI fuel
    Camshaft, Hydraulic Roller Tappet, Advertised Duration 288/308, Lift .431/.451
    Chevrolet Performance Vortec TBI Intake Manifold
    shorty's, y-pipe and 3" full boar muffler

  2. #2
    Fuel Injected!
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    Albuquerque, NM
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    I made a graph and I think I can figure it out. The lines cross close to Stoichiometric AFR. I dont know if there are any other setting that need to be set. No EGR.
    1993 Chevy Blazer TBI Vortec long block 5.7
    16168625 BDJZ 46mm TB 18 PSI fuel
    Camshaft, Hydraulic Roller Tappet, Advertised Duration 288/308, Lift .431/.451
    Chevrolet Performance Vortec TBI Intake Manifold
    shorty's, y-pipe and 3" full boar muffler

  3. #3
    LT1 specialist steveo's Avatar
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    4,007
    im horrible at math, but you can muddle through a linear equation easily.

    so use algebra to solve for x and get a multiplier for a linear equation that is 0 based then just add your base back in,

    ( 22.39 - 7.35 ) / 5 = 3.008

    so use 3.008X+7.35 to convert volts to afr (volts being x)

    but your raw value is probably 0 to 5 volts as 8 bit, so 5 volts is actually 255!

    so actually 0=7.35 and 255=22.39

    tunerpro equation would be 0.0589X+7.35

    you will have to tune that equation (tweak the 7.35 a bit at a time) as these inputs are far from perfect

  4. #4
    Fuel Injected!
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    Albuquerque, NM
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    Thanks steveo
    i am also horrible at math.graph.pnggraph.png looks easier.
    1993 Chevy Blazer TBI Vortec long block 5.7
    16168625 BDJZ 46mm TB 18 PSI fuel
    Camshaft, Hydraulic Roller Tappet, Advertised Duration 288/308, Lift .431/.451
    Chevrolet Performance Vortec TBI Intake Manifold
    shorty's, y-pipe and 3" full boar muffler

  5. #5
    Fuel Injected!
    Join Date
    Apr 2015
    Location
    Albuquerque, NM
    Posts
    52
    It has been a wile, making the time and looking into this closer I understand more of what you are tell me. moates.net support has a great page on this.

    Thank You again
    1993 Chevy Blazer TBI Vortec long block 5.7
    16168625 BDJZ 46mm TB 18 PSI fuel
    Camshaft, Hydraulic Roller Tappet, Advertised Duration 288/308, Lift .431/.451
    Chevrolet Performance Vortec TBI Intake Manifold
    shorty's, y-pipe and 3" full boar muffler

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