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Thread: wideband through egr

  1. #1
    Tuner in Training
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    wideband through egr

    I have researched and read all that I can..i just don't understand the computer lingo. I have a APSX WB.
    Analog lower limits (Range 7-25 AFR/Default is 9 AFR)
    Analog upper limits (Range 15-25 AFR/Default is 19 AFR)

    from the gauge I hooked the analog wire 0-5V out put to the #9 pin to the PCM (98 Camaro)
    I created histograms and this is where I think I'm entering the wrong info
    histo3.png
    I tried the 12.6 I got by the math equation I found searching. I also tried 7 based on analog lower limit
    histo2.png


    this is the error I get under for the 2 histograms I created
    error.png
    I need step by step help..thank you!!
    Attached Images Attached Images

  2. #2
    Tuner in Training
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    also I have the 2.22 version as I have the older HPt
    also I have the AFR gauge ground to the body. idk if this matters or if I should have it ground through pcm #34 pin
    Last edited by 98zeric; 09-05-2015 at 07:13 PM.

  3. #3
    Tuner in Training
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    I'm getting closer.i came across this http://www.corvetteforum.com/forums/...hp-tuners.html.
    so the 2 histograms no longer have a error come up. they just don't record any data
    new histo.png
    newhisto2.png
    this is all I could find to add to the table
    table.png

    any thoughts

  4. #4
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    anyone?..do I use the analog 0-5v? or the other one digital out put wire?

  5. #5
    Senior Tuner 5_Liter_Eater's Avatar
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    Have you read this? http://www.hptuners.com/forum/showth...nd-through-EGR

    You equation is wrong and it details how to derive the correct one.

    You need to have EGR Position (V) in the table. Can't tell which one you have there as it's not reading and it loses the (V) or (%) when you add it to the table.

    The 0-5V analog output from the WB is what needs to go to the PCM's EGR wire.
    Bill Winters

    Former owner/builder/tuner of the FarmVette
    Out of the LSx tuning game