jetting

[QuadRacer18]

i am running stock jetting right now in my 04 450r and i just installed a uni airfilter and hotcam stage 1. what main jet would you reccomend to start with? i am still running an airbox lid, without lid also? thanks

[KFX440ROX]

from what i have read you do not need to rejet when putting in aftermarket cams you might need to re shim the valves though and if you remove the stock airbox lid or cut a hole in it you will need to rejet which i would recommend doing it really wakes the machine up