jetting for new cam?

[ttied07]

Wondering if anyone knows whether or not I'm going to have to change my jetting when I install an 03' CRF cam. My jetting right now is 165 main, and a QVC? needle 4th position from top. If so, what should I change it to? Thanks

I put a 12:1 CP pisyton and an 02 crf cam and I didn't have to change my jetting. Are you running an open air box?

[ttied07]

open air box and stock filter w/ the screen cut out and rossier exhaust

[d3ktrix]

If all ur changing is the cam ur jetting won't change.

[ttied07]

that's all I wanted to know, thanks