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    I would stay with the 15/20 as the 14/19 is 1 mph...

    I would stay with the 15/20 as the 14/19 is 1 mph slower than a 15/20 at the same RPM.
    Tweak the impeller accordingly to run with the L13 cone and open your nozzle up to 85 mm
  2. The 15/21 is going to be too much pitch and will...

    The 15/21 is going to be too much pitch and will cause low RPM.
    The 15/19 is the correct impeller for both of your skis.
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    It is 100% moved forward

    It is 100% moved forward
  4. Are you sure you got the correct year ECU? It's...

    Are you sure you got the correct year ECU?
    It's possible you bought a bad ECU if you bought it used.
  5. 15/19! ...

    15/19!

    https://www.4-tecperformance.com/images/F144957222.jpg
    RIVA/SOLAS SEA-DOO CONCORD 15/19R IMPELLERSRZ-CD-15/19RSolas Concord Impellers increase low-end thrust and top-end speed. Constructed...
  6. Do you have fuel pressure? Your fuel pump could...

    Do you have fuel pressure? Your fuel pump could be bad.
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    Here you go ...

    Here you go

    https://www.4-tecperformance.com/images/F144786277.jpg
    Impeller Shaft Tool Yamaha 1.8L HO/SHO/SVHOTOOL53This tool is required to hold driveshaft when removing/installing impellers on...
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    I agree! Here are the pistons you want. Set...

    I agree! Here are the pistons you want. Set clearances at .0045
    https://www.4-tecperformance.com/index.php?main_page=product_info&cPath=356_371_10&products_id=4434
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    View Post

    Itís mechanical, not software. Itís gear driven and contained inside the engine in the PTO housing.
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    Sea Doo continues to be innovative and has given...

    Sea Doo continues to be innovative and has given us Intelligent Debris Free Pump System (iDF) on some models, such as the new 2021 Fish Pro.

    If you are out fishing on your ski and suck up some...
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    Check out whats new from Sea Doo for 2021

    I had the pleasure of attending the Sea Doo press introduction of the all new RXP-X 300 today and wanted to share the news with you.

    This is a completely new design and is a whopping 67 pounds...
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    a good upgrade is the new style 2020 pump...

    a good upgrade is the new style 2020 pump
    https://www.4-tecperformance.com/index.php?main_page=product_info&cPath=350_94_384&products_id=7624
  13. FS - Parts Guys when you get these PM’s please report them...

    Guys when you get these PM’s please report them so we can ban these scammers
  14. Check out the new 2021 Sea Doo's here Thursday night!

    Sea Doo will release all info from this link. I will be there Thursday riding the 2021's, my review will follow

    https://www.facebook.com/SeaDoo/posts/10158723564023307
  15. Make sure your ribbon has not come loose blocking...

    Make sure your ribbon has not come loose blocking air flow.
    Here is a ribbon removing kit if you choose to upgrade your intake manifold and remove the restrictive ribbon...
  16. The wear ring, or pump is not the issue. The...

    The wear ring, or pump is not the issue. The problem is the design of the GP1800 tunnel and intake grate. Cavitation is a big issue when you increase power with modifications. The new Gen2 design...
  17. I will be there on the 10th riding the skis, but...

    I will be there on the 10th riding the skis, but I cannot post information until the same time as the live stream.
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    Thanks for chiming in. I edited my post as to not...

    Thanks for chiming in. I edited my post as to not spread false info.
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    Don't use any nose cone at all. They are...

    Don't use any nose cone at all. They are problematic, walk up the shaft and cause cavitation. Believe it or not your ski is faster without an impeller nose cone.
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    Water jacketed turbo?

    Water jacketed turbo?
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    George, thanks for chiming in. Glad to see this...

    George, thanks for chiming in. Glad to see this is available now. Years and years ago when I inquired... probably around 2008-2009 you told me that you couldn't change the throttle plate and it was...
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    I agree!

    I agree!
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    What you are describing sounds like a cavitation...

    What you are describing sounds like a cavitation issue. When's the last time you changed your wear ring and carbon seal with bellow?
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    I agree with ptscon, it's best to replace your...

    I agree with ptscon, it's best to replace your supercharger. The GreenHulk Store offers them at a discounted price

    https://www.4-tecperformance.com/images/300sc.jpg
    Replacement Supercharger For...
  25. No sealant needed there either

    No sealant needed there either
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