Hi everybody, i m new here... sory for my english, but i will try to speak with you !!! I ha ve little question about my 2011 drz 400 sm... Fist is bore stock, i just put a power tip on it ( so he have no more baffle) , i put a k&N filter and i put off de snorkle ( just the snorkle, not the 3x3 mod) So my question is: i want to know if i have absolutely need to rejet him ?? or i can ride like this?? Thanks !!