whats next

[BigVince]

okay... i have an 06 yfz 450...

i've taken off the air box lid, changed the filter, retarted the exhaust cam one tooth, and re jetted.

what's the next step. Is it time for a full system exhasut or would i stand to gain more power by porting and polishing the head?

[250r4life]

take the baffle out of your silencer if you havent arleady

[250r4life]

ps... i would get exhaust before i messed with the porting and polishing