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Timing advance/PCM piggyback

This is a discussion on Timing advance/PCM piggyback within the Computer & Tuning forums, part of the LSx Technical Help Section category; Has anyone had any experience using a PCM piggy back that advances the timing by fooling the computer into thinking ...

  1. #1
    Junior Member Ponti-MANIac's Avatar
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    2000 Pontiac Trans-am WS6

    Timing advance/PCM piggyback

    Has anyone had any experience using a PCM piggy back that advances the timing by fooling the computer into thinking that the engine is receiving cold air? I see manufacturers of such products that claim up to 20hp. Sounds to good to be true.

  2. #2
    Token V6 Guy
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    2000 Grand Prix GTP

    they really dont add any timing...it just doesnt make the computer PULL as much

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