FMF silencer

[dooner17]

I just put an FMF powercore 4 silencer on my 200s. It sounds good but no real noticeable power increase. I checked the plug and it was burning brown tipped to I didnt rejet. If I did rejet would it make a difference?
Also this pipe is designed for a XR200

[trikezilla]

You probably wouldnt notice much difference on any machine if you put a pipe on it that isnt designed for it...however..you may notice a power increase if you had a larger diameter hole on the silencer for exhaust to escape through. LESS RESTRICETED AIR FLOW = MORE POWER DOONER17: do you run the stock header?? I WOULDNT REJET IF THE PLUG LOOKS LIKE IT IS SUPPOSED TO. you know the saying "...dont fix something if its not broken..."

[dooner17]

yeah its the stock header and the XR200 and 200s motors are prety much identical so the pipe is sorta desighned for this motor