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  1. #1

    GP1800R losing power?

    I just purchased a 2020 GPR SVHO and so far it has about 4 hours on it. Ive taken it easy and let it run through the break in period but one time today i streched it out a little and once it hit top speed it slowed down on RPM and speed. did it a couple more times and it does the same thing. Is that what the governor does? Seems weird for it to let it get to a high speed and then derate it. I plan on soon doing the Riva stage 1 plus and thats all I really want to push it to. Also do the 2020s still have the issue with the hull cracking over 80mph? TIA.


  2. #2
    MSX 150 guy lives on Mr. GP1800's Avatar
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    That’s the speed limiter kicking in.

  3. #3
    Quote Originally Posted by Mr. GP1800 View Post
    That’s the speed limiter kicking in.
    Thats what I thought. I cant see how anyone can deal with that and leave it stock. Im excited to do a little modding to this thing. The last time I was this happy to tweak a waverunner was with my old GP 1200R so this is a whole new experience. Do I still need to do the hull reinforcement on the 2020?

  4. #4
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Stedson350v View Post
    ... 2020 GPR SVHO ...

    ... Also do the 2020s still have the issue with the hull cracking over 80mph? ...
    Which particular issue are you referring to?

  5. #5
    Hull cracks were on 2017 & 2018 Models due the intake grate brackets/Hull combination.... it is fix since 2019

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  7. #6

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    welcome to the 4 stroke world from the gp 1200 , First thing you must do is get the ecm reflashed or get the maptuner program. these ecm's are capable of un locking a whole new ski for your use when re programed, enjoy your new project. Tommy Jordan

  8. #7
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Stedson350v View Post
    ... issue with the hull cracking over 80mph? ...
    Quote Originally Posted by FAMT View Post
    Hull cracks were on 2017 & 2018 Models due the intake grate brackets/Hull combination...
    The intake grate bolt area cracks could occur on non-modified GP1800 and even VXR. 80 mph was not necessary.

    Only an issue for 2017 and 2018 model years on GP1800, and cracking could be avoided by reinforcing the hull in that small area.

    Is there some other area of concern about the GP1800 hull?

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