Glamis Jetting Change?

[ds450]

I live in New Jersey and im going to glamis at the end of the month and I was wondering what size jet I will need to put in my friends 07 trx450 when I get there? Hes going to have a curtis sparks exhaust, K&N, and no air box lid.

[bloodmoney23]

cant give you exact jettings but you will drop the main 1-3 sizes and prolly the pilot 1 size. I just know you will need to lean it out a bit. I can try to call my uncle that lives out that way and ask him then ill let ya know what hes running.