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Hey guys I have a 2008 KFX 450R and just got a new FCI intake installed on it and went out for the first trip of the year to the little sierra sand dunes unfortunetly I didnt get to ride very long, I started to notice it seemed like I was loosing power so I came to a stop and then went to go again and had to rev the machine pretty high to take off almost like I was in 4th gear trying to start out but I was in 1st gear then shortly after the noise begun, rattle and knock almost sounded like the entire motor was going to blow into pices so I shut her down took it home and tore it down took the head and cylinder off and the valves cylinder piston crank everthing looks good I thought for sure with all the racket I had to have sucked a valve or broke the connecting rod but no its all in great shape also keep in mind the machine only has around 30 hours on it. any ideas should I just put it back together??? and see what happens im baffeled thanks for any input or help!!!