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Thread: calculated pid not valid for NGK/NTK Air-Fuel Ratio Monitor

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  1. July 25th, 2014 #6
    joecar
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    Quote Originally Posted by Trackman View Post
    Thank you. That got it working. Unfortunately my formula must be wrong. My afr is reading 4 points to low. NTK suggest {(vout-0.5)x2.75}+9

    I have:
    *CLC-00-003
    AFR 9.0 20.00 .1 "{EXT.AD1}-0.5*2.75+9"
    When I looked more closely at your formula (and compared it to the NTK user manual pdf) I see it is incorrect...

    it should have parenthesis around the subtraction term, like this:

    "({EXT.AD1}-0.5)*2.75+9"
    Last edited by joecar; July 26th, 2014 at 11:31 AM. Reason: spelling
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