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  1. #1
    MARCO PESSOA's Avatar
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    Fx svho 2019 stage 1 plus

    Hi Everyone, I have a Fx Svho 2019 with 45 hs with Maptuner Stage 1 plus 8500 rpm, Riva filter, Riva manifold upgrade, Riva pro series cooling upgrade. The result in GPS and TTO with the OEM impeller shows 76.5 mph with 8050 rpm. Today i changed the oem impeller to a solas 13/18 and the results were exactly the same: 76.5 mph and 8050 rpm. tropical weather, sea level and 82,5 F temperature. i thought this impeller mod would give me about 150/200 rpm and 1,5 or 2 mph but still the same results. Any sugestion? many thanks.

  2. #2
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by MARCO PESSOA View Post
    Hi Everyone, I have a Fx Svho 2019 with 45 hs with Maptuner Stage 1 plus 8500 rpm, Riva filter, Riva manifold upgrade, Riva pro series cooling upgrade. The result in GPS and TTO with the OEM impeller shows 76.5 mph with 8050 rpm. Today i changed the oem impeller to a solas 13/18 and the results were exactly the same: 76.5 mph and 8050 rpm. tropical weather, sea level and 82,5 F temperature. i thought this impeller mod would give me about 150/200 rpm and 1,5 or 2 mph but still the same results. Any sugestion? many thanks.
    your problem is you are still using the stock ride plate. I'm shocked you are even going 76 mph with the stock plate. The stock plate causes weird handling issues above 73 mph and it also slows the ski down a lot. You need to get the RIVA ride plate. These will finally start shipping in about 5 days. You will then see big gains. I personally would run the Solas 13/20 with Stage 1 Plus tune

    RIVA Yamaha 2019+ FX SVHO Ride Plate

    Release Date: MAY 2019 Our new 2019 FX SVHO Ride Plate delivers the perfect balance of increased top speed and improved handling in a variety of...
    RY21120 $299.95

    Solas Yamaha 160mm Concord 13/20 Impeller for SVHO Skis

    The new Solas Concord YV-CD-13/20 blows away the performance of your stock impeller! Large blade area and superior hub design deliver increased...
    YV-CD-13/20 $316.95



  3. #3
    Gsmith88's Avatar
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    Quote Originally Posted by MARCO PESSOA View Post
    Hi Everyone, I have a Fx Svho 2019 with 45 hs with Maptuner Stage 1 plus 8500 rpm, Riva filter, Riva manifold upgrade, Riva pro series cooling upgrade. The result in GPS and TTO with the OEM impeller shows 76.5 mph with 8050 rpm. Today i changed the oem impeller to a solas 13/18 and the results were exactly the same: 76.5 mph and 8050 rpm. tropical weather, sea level and 82,5 F temperature. i thought this impeller mod would give me about 150/200 rpm and 1,5 or 2 mph but still the same results. Any sugestion? many thanks.

    are you sure your rpms are accurate ? That’s a pretty high top speed for those rpms. I was running 8450 @76mph on my 19 fx

  4. #4
    MARCO PESSOA's Avatar
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    i use an Garmin GPs and a TTO digital tachometer and it seems very accurate. Are you using the oem rideplate? i have a jimīs cut rideplate on it.

  5. #5
    MARCO PESSOA's Avatar
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    Jerry, i forgot to mention. i already have a jimīs cut rideplate installed. any hints?

    Quote Originally Posted by Green Hulk View Post
    your problem is you are still using the stock ride plate. I'm shocked you are even going 76 mph with the stock plate. The stock plate causes weird handling issues above 73 mph and it also slows the ski down a lot. You need to get the RIVA ride plate. These will finally start shipping in about 5 days. You will then see big gains. I personally would run the Solas 13/20 with Stage 1 Plus tune

    RIVA Yamaha 2019+ FX SVHO Ride Plate

    Release Date: MAY 2019 Our new 2019 FX SVHO Ride Plate delivers the perfect balance of increased top speed and improved handling in a variety of...
    RY21120 $299.95

    Solas Yamaha 160mm Concord 13/20 Impeller for SVHO Skis

    The new Solas Concord YV-CD-13/20 blows away the performance of your stock impeller! Large blade area and superior hub design deliver increased...
    YV-CD-13/20 $316.95


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