You placed your topic in the AVL category, and your Bullet is an Iron Barrel type.
So, that might have something to do with why nobody here in this category answered.
Anyway, the K&N works okay on the Iron Barrel, but it causes the intake manifold rubber hose between the carb and engine to fail early, due to no support on the flying end of the carb. Also, throttle response suffers because of insufficient internal volume inside the filter mesh barrier. And there is significant air intake noise because there is no noise barrier present in that pod type of filter.
I think if you re-post this topic in the Bullet Classic Models section, many people will mention the type of filter product which solves these issues and works very well.