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Thread: jetting issues

  1. #1
    Stock, ready to MOD r660guy's Avatar
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    jetting issues

    i have an 05 raptor 660 with a Yoshimura rs3 full exhaust, K&N filter with cut lid, Big Gun Rev box, Stage 2 Hot Cam and a 11:1 compression Wiseco piston. I have a Dyno Jet jet kit with 160 and 158 Mains with the clips on the 4th notch. when accelerating from 1/4 to 3/4 it starts to bog. I called Dyno Jet and they said to cover the lid up because cutting it or ditching the lid does nothing for it an dactually robs power. what pilot jet should i go to? ill check tonight an dsee whats in it now. Also not sure where the fuel screws should be set at. any help would be appreciated. Planning on going to Dunefest next week...
    05 Raptor 660
    Wiseco 11:1
    Hot Cam Stage 2
    Hot Cam Valve Springs
    EBC Clutches
    Yoshimura RS3 Exhaust
    K&N Air Filter
    Dyno Jets
    Crank Breather
    Streamline Hydraulic Clutch
    Big Gun Rev Box
    YFZ 450 Front Shocks

  2. #2
    Stock, ready to MOD r660guy's Avatar
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    9782
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    Pilots are stock at 22.5 and I have the fuel screws at 2.5 turns out

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