Air Filter Help.....

[Breyon55]

ok I just ordered my K&N, jet kit and adapter plate to remove the air box for my 400.......now when i put this new filter on do i have to change the jets at all or can i leave it?..quad is all bone stock........

[UglyMotha™]

you'll have to do some jetting or else you'll be running lean

[tprender]

Just follow the directions in the jet kit. It will tell you what jets to try and they will come with the jet kit.