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SaMO3 ermm how much mm do you port that exhaust intake??

:help::help: want to ask..why after i'm do this mods..my fuel comsumption increase and seem the fuel mixture become rich (plug color become dark)??..do i have to rejetting my carb again??..uma 28mm mj=95 pj=32 + shark 62mm block..thnks:dance:

#stock bore+cms hi cam+thailand cdi+cms spring valve+leovince corsa exhaust+ngk g-power plug #uma racing 28mm carburetor #mj = 90 (use mj 88 if use standard camshaft) #pj = 30 #needle jet is set to no.3 # air screw turns =2 turns (if use standard camshaft only 1 turns required);):)

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