so do i keep the b1 jet or do i buy a new jet kit any suggestions?

 

you keep the jet you have you just need to take it some where professional to make sure your not running to lean after you install the new airbox

 

on the web site it says up to 50% more air flow, so im thinking that you are going to have to re-jet with that much of a increase

 

well my uncle used to race motocross back in the day and he knows what hes talking about cuz he had to do all of his own work i asked him for help to put my main jet on but i found it was a simple unscrew and screw i didnt do it earlier cuz i thought i had to change the settings but he already said hed help me out so im straight i dont wanna waste my money at the dealership when he can do it for me

 

i would still check it out. Any time you adjust the air flow, or gas flow, you should always aleast check the jetting. A simple plug test can save you alot of time and money.

 

i dont really kno how to do that so ill leave it for him to do it for free

 

ok heres the report! omg i love it, top end went up like crazy and the gears are way longer and great throttle responce! best upgrade i have besides my toomeys and especially for the money its great!

 

wanaply21, What did you have to do to the jets when you installed the box?

 

there is no box it runs straight off the carb i took it out for a ride then i changed the air flow needle a bit and it sounded good then i went and checked the spark plug i rinced it off and ran it wide open for 30 sec and it came out with a crisp gold color is that good cuz i ran it after that and it ran great

 

sounds nice dude
i think i am going to get that airbox from CFM and see how that works out.