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Thread: 2008 Ram V6, cannot edit tire size or speedometer calibration

  1. #1

    2008 Ram V6, cannot edit tire size or speedometer calibration

    ... or anything related to the transmission, really. Is this PCM locked down that tight that I can't change the speedometer calibration, or tire size? I mean, I'm more familiar with GM stuff, which makes it relatively painless to change those settings. Is this just a case of "CHRYSLER " or am I blind?

  2. #2
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