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  1. #1

    Angry Power valve block off?????

    Friends tell me how to lock the power valve?? You can remove it completely and use without him?
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  2. #2
    Moderator OsideBill's Avatar
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    No it needs be installed and working for the ski to operate properly. The only time people lock them down is when they do a big bore and they alter the exhaust port, GroupK did this on their 1390 skis

  3. #3
    My GP1300R 2008 years of manufacture, my new engine GP1390R 2004 years of manufacture.
    I have no servomotor for control of valves of capacity.

    What should I do with the power valves for proper operation of the engine??
    You can lock the valve in the open state?
    What parts need to buy?
    http://www.ebay.com/itm/WaveEater-Po...item256ff40582
    http://www.ebay.com/itm/Yamaha-800-P...035b93&vxp=mtr

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