300ex jetting?

[jvd182]

i orderd a yoshi pipe and a k@n with outerwears what main jets should i get and what others should i ajust? and would this be safe for mud with out the air box lid? or could i just put it back on when i need it?

[44oEX]

with the lid on normaly a 128 works good. but with no lid it would be a little bigger. and if you want to do mud you need a lid and no you can`t just put the lid on and takeit off again. well you can but you will have to rejet