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4 Stroke Performance


  1. 4 Stroke Turbos/Supercharger

    Lets talk Turbos and Supercharger....
    Discussions:
    7,481
    Messages:
    73,831
    Latest: Nytro motor in Sidewinder? RobX-1, May 24, 2021
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  2. 4 Stroke Nitrous

    Lets Talk Nitrous....
    Discussions:
    393
    Messages:
    3,475
    Latest: Clutch weights polarisconvert, Apr 2, 2021
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  3. 4 Stroke Air Intake

    Post all of you Air Filter questions, EVAC and mods to filters....
    Discussions:
    394
    Messages:
    4,128
    Latest: IAC cleaning question Seann17, Apr 1, 2021
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  4. RB3, PCIII, other EFI Maps

    A place for members to down load and share a EFI maps
    Discussions:
    158
    Messages:
    1,001
    Latest: 2011 XTX Ulmer/PC5 MAPS blevis213, Mar 9, 2021
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