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Message: [QUOTE="harrybosetti, post: 821992, member: 55952"] I have a 2001 CR-80, I recently put on a FMF Fatty expansion chamber and a FMF Q silencer. I ride my bike at about 3500 feet. Ever since I got the new setup, I've been having a problem with the topend power of my bike. Here is what happens. I hit the throttle and accelerate as normal, rpm's increasing normally, then, right before that burst of speed, the rpms flatten out, then the engine sounds as if it's waivering. I have the throttle full open but I just can't get the engine to go past this certain point? What do you guys suggest I do? Any help is much appreciated! [/QUOTE]