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Thread: GP1300 05 HP

  1. #1

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    GP1300 05 HP

    The 05 GP puts out stock 170 HP
    Whats the forums take on the sort of HP/KW is expected when GP1300r 05 has these mods:

    VF3
    riva EFI pro
    Cat
    Free flow
    R/D Filter


  2. #2
    R.I.P. 11's Avatar
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    190ish, maybe close to 200...

  3. #3
    ABBOTT's Avatar
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    not too much more without porting and milling of the heads to increase compression. Of all those listed, maybe 10-15 (realistically, and not what you read on companies web sites) at the most. The mods you listed are mainly remapping fuel to be burned, increasing air flow throughout the engine and re-mapping the exhaust pressure.

    Remember - these days, there are many ways to increase speed just with, pump, hull, ride plate, and trim tab settings. We still focus on pure HP for the most part, but not nearly as much in the past year. There is lots of speed to be had right underneith the boat.

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    Pistonwash's Avatar
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    Re: GP1300 05 HP

    Quote Originally Posted by jetsurf
    The 05 GP puts out stock 170 HP
    Whats the forums take on the sort of HP/KW is expected when GP1300r 05 has these mods:

    VF3
    riva EFI pro
    Cat
    Free flow
    R/D Filter
    I would imagine it would be closer to 15 actual dyno horsepower.

    Most of the "horsepower" gains can be made in the hull, if thats where you would like to go next.

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