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  1. 02-16-2006, 11:39 AM #1
    Ponti-MANIac
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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.
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  2. 02-16-2006, 04:39 PM #2
    foff667
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    they really dont add any timing...it just doesnt make the computer PULL as much
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