MTX-L vs Tunerstudio Discrepancies

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  • megu2ice
    Member
    • Jul 2013
    • 61
    #1

    MTX-L vs Tunerstudio Discrepancies

    There's a difference of .5 AFR between the Mtx-L gauge and my tunerstudio gauge. Does anyone know what might be the issue? I'm not sure if this has always been the case since I've installed it but I only noticed it recently. My initial guess would be the ground for the gauge might of come loose which I will check this weekend.

    Is there anyway to sync the two and if not, which one is accurate?
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    • ak-
      R3V OG
      • May 2009
      • 12422
      #2
      Ground Megasquirt and the gauge's ground wire(s) all to the same ground. For example, the ECU ground/shock tower.
      That put my readings in sync.

      Also do your 0v - 5v settings in tunerstudio match whatever is programmed into your MTX-L?

      1991 325iS turbo

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        • megu2ice
          Member
          • Jul 2013
          • 61
          #3
          The gauge is grounded to the shock tower and the 0v-5v settings in tunerstudio are set to whatever the lc1 settings are. Does anyone know the specific voltages for the mtx-l?
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            • ak-
              R3V OG
              • May 2009
              • 12422
              #4
              0v - 7.35 afr
              5v - 22.39 afr


              http://www.innovatemotorsports.com/s...rint%201.2.pdf

              1991 325iS turbo

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                • megu2ice
                  Member
                  • Jul 2013
                  • 61
                  #5
                  Made some changes to the calibration and its within .1 afr. Thanks for the help
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