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  1. #1
    Thor's Avatar
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    2020 FX SVHO or GP1800 SVHO ?

    I’m just curious what, besides MSRP and color schemes, the major differences between the 2020 FX SVHO and the GP1800 SVHO?

    I know at least some of you have owned one or the other (and maybe some even have owned both) and I am just trying to obtain info on reasons why some picked one over the other?


  2. #2
    WaterDR's Avatar
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    Two, completely different machines. Nothing is really the same other than the engine.

    The FX is larger, different hull, a legit three up machine, more storage space, digital control system. From a practical standpoint, the FX is more stable and is better for cruising. The GP should make Corner carving tighter. But I personally think the new FX hull and ride is much improved over the GP. I think the FX is a much better machine.

  3. #3
    Thor's Avatar
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    Thanks, “Doc!”

    I have been contemplating “getting over” my “anxiety” about and staying away from a supercharged model as the naturally aspirated seem less prone to “issues” and are closer to my level of comfort as far as DIY tasks, etc. (Also, we are realllllll happy buying only NO ethanol gas and about the highest octane we can get ZERO ethanol in is 90 ... and I understand the supercharged require a minimum of 93. (?)

    Anyway, since we ride only on a flat surface lake and do more “cutting” and shredding than cruising, I thought if go the SC route, the 2020 GP 1800 SVHO would be a logical progression “up” from the ‘18 VXR.

    But today, I learn our oldest son is “jonesing” over the all black (“murdered out”) FX SVHO.

    Ive spent some time looking the specs over and was scratching my head and thus I really, REALLY appreciate your input!

  4. #4
    Click avatar for tech links/info K447's Avatar
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    Yamaha SVHO engine requires 91 octane gasoline.

    Can be with or without ethanol, engine runs the same.

    FX SVHO and GP1800R SVHO models.

  5. #5
    Thor's Avatar
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    Thanks for the correction, K (I’ll gladly go with 91 rather than 93!!!

    I wonder if I could get by with 90 octane and simply add an “octane booster” from Advanced Auto Zone or O’Reillys type source?

    I cant help but wonder if my oldest is simply “smitten” with the all black FX SVHO ... that is, he doesn’t understand the GP1800 SVHO (man, that’s a mouthful!) may be the more “nimble” on our hidden little lake!

  6. #6
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Thor View Post
    ...

    I wonder if I could get by with 90 octane and simply add an “octane booster” from Advanced Auto Zone or O’Reillys type source?

    ...
    Octane boosters do not create fuel that is ‘the same’ as using gasoline of the correct octane. Ongoing use of octane boost with every tank is potentially adverse to the Yamaha engine warranty. Boost products vary in terms of what chemicals are used, and some can create deposits in the engine or add pollutants to the exhaust flow going into the lake.

    In addition to the cost to buy and consume with every tankful.

    Ethanol blended gasoline is entirely acceptable and is a ‘proper’ fuel for the SVHO engine, as long as that gasoline is 91 octane (or higher).

    If you have ethanol 91 octane available, use that. If all you have available is 90 octane (with or without ethanol) then SVHO may not be the engine you want.

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