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"YICS" what is it and what does it do exactly???

Discussion in 'XJ Technical Chat' started by chadly89, Jun 9, 2008.

  1. chadly89

    chadly89 Member

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    i know it stands for yamaha induction controll system i think, but what exactly does it do?
     
    chadly89, Jun 9, 2008
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  2. MiCarl

    MiCarl Active Member

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    It is a small passage that connects all the intake ports. It's supposed to create a mixing effect when the intake valve opens to either reduce emissions or improve performance (can't remember which).

    Personally, I think it's mostly a marketing gimmick.

    Mostly, it's something you need to plug up when you sync the carburetors.
     
    MiCarl, Jun 9, 2008
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