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Jetting 2007 450x with fmf exhaust

Posted: Mon Mar 23, 2009 9:45 am
by clugo
I just installed a FMF factory 4.1 slip on exhaust onto my stock header. I removed the top of the air box and have tried all jets up to a 165 and adjusted the fuel screw. The bike will bog down with the throttle wide open. Does anyone have any ideas. I live and ride in So Cal.

Posted: Mon Mar 23, 2009 10:19 am
by Skoot22
NCVS Needle Honda Part # NCVS 16233-MEN-671
Run it in the 4th pos.
170 main jet
stock 45 pilot is fine.
Fuel Screw out around 2 turns.

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