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  1. #551
    Outboardjohn's Avatar
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    Jerry, since you are running the stock exhaust outlet location, did you cut/remove those rubber fingers out of the exit, and if so what effect did it have on the exhaust tone?
    Thanks
    John

  2. #552
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Outboardjohn View Post
    Jerry, since you are running the stock exhaust outlet location, did you cut/remove those rubber fingers out of the exit, and if so what effect did it have on the exhaust tone?
    Thanks
    John

    John, I now have the RIVA rear exhaust installed on my GP. It's not obnoxiously loud. I find it's just a little louder than stock with a nice throaty sound. Adding the RIVA waterbox would make it super loud.

    RIVA Yamaha GP1800, 2015+ VXR/VXS Rear Exhaust Kit

    Our rear exhaust kit for 2015+ Yamaha VXR/VXS delivers performance and cutting-edge style. Allows for removal of restrictive sound suppression system...
    RY15061 $369.95

    RIVA Yamaha Water Box SVHO/SHO/HO 1.8L

    Developed on our Dyno and tested extensively on the water, this water box features radiused exhaust tubes and end caps for optimum exhaust flow....
    RY16041 $419.95


  3. #553
    Jerry I went thru the whole thread and didnít see the difference the ski made from the stage 2 too the stage 3. What was the difference in speed and acceleration?

  4. #554
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Mmafighter View Post
    Jerry I went thru the whole thread and didn’t see the difference the ski made from the stage 2 too the stage 3. What was the difference in speed and acceleration?
    The ski is currently at 88+ mph with the GreenHulk Stage 3 kit. Difference in acceleration is night and day over stage 2. Not even close!

  5. #555
    REID2168's Avatar
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    Quote Originally Posted by Green Hulk View Post
    The ski is currently at 88+ mph with the GreenHulk Stage 3 kit. Difference in acceleration is night and day over stage 2. Not even close!
    AWESOME!!!!!!!!!

  6. #556
    Quote Originally Posted by Green Hulk View Post
    The ski is currently at 88+ mph with the GreenHulk Stage 3 kit. Difference in acceleration is night and day over stage 2. Not even close!
    Sweet!


  7. #557
    SpeedJunky's Avatar
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    Quote Originally Posted by Green Hulk View Post
    The ski is currently at 88+ mph with the GreenHulk Stage 3 kit. Difference in acceleration is night and day over stage 2. Not even close!
    Jerry, you running the 17lb wheel or the 19lb wheel ?

  8. #558
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by SpeedJunky View Post
    Jerry, you running the 17lb wheel or the 19lb wheel ?
    I'm currently running the F1/17 psi supercharger impeller


    Engine Tech / RIVA SVHO F1 Supercharger Impeller - 17 PSI

    Presenting the ultimate (drop-in) supercharger impeller for the Yamaha SVHO Engine! Designed to deliver more horsepower and torque throughout the RPM...
    RY17080-SCI-F1 $579.95


  9. #559
    I like pipes. I love boost Mr. GP1800's Avatar
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    Quote Originally Posted by Green Hulk View Post
    The ski is currently at 88+ mph with the GreenHulk Stage 3 kit. Difference in acceleration is night and day over stage 2. Not even close!

    How is the sound on the rear exit compared compared to the free flow? My friend has the free flow and I can't stand the sound of it. I'd consider the rear exit of it sounded good and isn't much louder than stock

  10. #560

    GreenHulk's GP1800 build up thread

    Free flow exhaust and waterbox has tons of drone which goes straight to your ear drums.

    Through hull exhaust and waterbox is still very loud. People hear you from half a mile away . Less drone too

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