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Help Support Yamaha Raptor 350 & Warrior Forum:
Jetting for powercore 4 ???
I got a FMF Powercore 4 for my '98 WARRIOR and I already have my big gun header ( they don't even make them anymore ) I have it jetted for my header would I have to jet it for the Powercore 4
Dec 29, 2012
Motor, Transmission, Electrical, Intake & Exhaust