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Ultra LX N/A & STX12/15 Performance

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  • yep. stock. got one on my desk right now.

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    • Nope, no problems, I only run super unleaded in it anyways. Runs really well, speedo is reading 71mph and gps says 67 mph top speed. How inaccurate are those Speedo‘s typically?

      thanks
      Last edited by Gm991; 06-17-2020, 12:42 PM. Reason: More

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      • I think that magnetic fields can confuse the exact location of GPS

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        • The gps is correct, the paddle wheel is off. My 12f routinely read 70mph.

          Sean
          The older I get, the more I find myself fixing things that I knew I was doing correctly at the time.‚Äč

          Ski not running well? Check HERE!

          1987 JS550 - JankyStandup
          2004 STX NAsty15f

          2004 STX-RXT-X Conversion
          2001 Toyota Tundra Basketcase

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          • My speed is down around 6 mph, clearance gap is .018, dings on prop, scratches on the inside of housing. I've attached pictures. Is it necessary to replace the housing and the impeller?Click image for larger version

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