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jetting prolems

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could anyone help me with some jetting problems??

i just bought a 05 yfz 450. and i just bought a pro circuit t-4 pipe so my question is what size main and pilot jet i should be running or where the needle should be???i live at 3500 feet i was thinking about putting a few holes in the air box of just taking it off all the way?

so any help would be great!

thanks

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