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Thread: speedo calibration problem

  1. #1
    Junior Member
    Join Date
    Jan 2012
    Posts
    30

    Default speedo calibration problem

    hey guys ive changed my gear ratio on my 05 vz maloo from 3.46 to 3.73 and i changed the diff ratio on {H0122} and also {H0103} to 3.73 and flashed the pcm with the new parameters and my speedo still seems to be about 10km out at 100km/hr does anyone have any ideas, should i look at adjusting {H0104} being output shaft revs per km? cheers james

  2. #2
    New Member Evil R8's Avatar
    Join Date
    Jul 2008
    Posts
    6

    Default

    If speedometer is incorrect by only a few mph or km/h,
    use this calculator to apply the required changes.
    Just do the speedo fine tune
    Speedometer
    {H0101} Vehicle Speed Sensor Pulses per Kilometer,

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