air box lid and fmf fatty

NOVIS

New Member
Apr 22, 2009
3,054
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little hick town in Ontario, Canada
i just orderd an fmf fatty pipe from ebay. i already got the powercore 2 silencer and im gonna try a 270 main jet. if i decide to remove the air box lid would i have to try a bigger size jet or would it not make a difference?