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Thread: what is stock jetting for 400ex?

  1. 01-23-2004, 05:08 PM #1
    trouble661
    trouble661 is offline Member
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    what is stock jetting for 400ex?

    does anyone out there know what stock main and pilot jetting is for 400ex? also when i peg throttle from idle it dies. is that too rich or too lean?i just installed WB eseries slip on pipe.
    All throttle and no brains http://www.geocities.com/nascarfan63386/
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  2. 01-23-2004, 05:10 PM #2
    ExVillin400
    ExVillin400 is offline Senior Member
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    stock main is 148
    01 yamaha warrior black & white complete big gun race pipe, dyno power kit w/k&n, 22" front razrs, rear 20*11*8, dg nerfs, prm front bumper, piaa headlights, msr chrome handle bars, ez pull clutch kit, nacs block-off plate, maier back plastics, + air box mods FOR SALE!


    yellow 02 400ex, IN THE PROCESS OF GETTING EVEN MORE HOOKED UP!
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  3. 01-23-2004, 05:32 PM #3
    phebus
    phebus is offline 2004 400EX
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    Stock main 148, pilot 38
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