Rejet for Works pipe on '03 yz250???

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Dec 16, 2002
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#1
i'm putting a pro circuit works pipe on my '03yz250...i was wondering if i will need to rejet (main)...i'm at sea level, and it runs a l'il rich w/ stock pipe now, but not rich enough to have to rejet it...the air screw usually tweaks it to perfection...thanks