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Speedometer vs. Rev Limiter PCM tuning

This is a discussion on Speedometer vs. Rev Limiter PCM tuning within the Computer & Tuning forums, part of the LSx Technical Help Section category; After installing my 3.91 ratio 12 bolt, with my EFI Live Software, I inputted the new gear ratio & 25" ...

  1. #1
    What Would Earl Do? Vexzer's Avatar
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    Speedometer vs. Rev Limiter PCM tuning

    After installing my 3.91 ratio 12 bolt, with my EFI Live Software, I inputted the new gear ratio & 25" tire diameter. Trans is M6. Now the rev limiter cuts in @ 4500 -5500 rpm [varies]. That was the only change I made. It was not a new file [i.e.: I uploaded the PCM, changed only that, saved the file & downloaded]
    If I set it back, all returns to as before. Does anyone know what I missed?

  2. #2
    TunedbyFrost.com Tuner Frost's Avatar
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    post the file

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