Need some help here.. Buddy of mine has a yoshi pipe and K&N filter on it, can someone get me in the ballpark on a main jet?

thanks!

165

Pilot ?

http://hmfracing.com/forums/showthread.php?t=4325

I went with a 155 and stock pilot but bought a adjustable needle. this is with a full yosh and a k&n with no air lid

I went 155 main pilot stock lifted stock needle by putting all spacers under needle clip , I have same full system . I'm at 1800 ft elevation the bike gets it pretty good with set up.