info for 2003 z400

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99warriornj

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my buddy just got a z400. hes looking to put a slip on or possibly a full exhaust.. apparently hes got some people telling him he doesnt need to jet it but its my understanding that if more gases are spilled out, more air and fuel need in no matter what the circumstance may be.. basically just wondering if anyone knew of a z400 forum i can send him to so he doesnt possibly burn valves or worse.
 
Thats what i was always told if u pipe it u jet it, but it also would depend on the pipe to. a friend had an fmf pipe on his raptor and they tried to rejet it and it wouldnt run right.
 
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