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  1. Performance Modifications
    Okay iv been asked on every fb group and looked around and cant find jack. 05 400ex will not idle. Im at 1000ft and 45°. I can get it to barely idle but the throttle response is bad but i can get it to have good throttle response but no idle. What jets should i run? Pleaseee
  2. Honda TRX
    so i have a 400ex bored out to a 440ex with a stage 3 hot cam and a stage 1 or 2 crank not sure which on it is. Right now i’m running a 172 jet and a 50 jet and the thing backfires like back in Nam. I have the fuel screw turned out to 3 1/4 turn and still nothing. I have an holes in my air box...
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