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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
    Join Date
    Mar 2006
    United States
    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?

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