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Trident21

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About Trident21

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  • Porsche Club
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  • Present cars
    987 Boxster S

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  1. I agree, the strange thing is: With Pcm i have the PSM alarm, but with the old CD 24 the alarm is gone. When the snow here in Sweden is gone I will take the car to the local Porsche dealer.
  2. It is a second hand band new PCM 2.1 (newer installed before). What scares me is the PSM alarm, does PSM communicate throw the optical fiber?
  3. I´m retrofitting a PCM in my boxster 987, everything works fine until i try to start it up. The screen remains black and there is an alarm "PSM failure". Is this normal and will be sorted out with Piwis or is the unit broken? The unit is a new one.
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