[McBike]

I doubt your running lean. From all of the posts that I have read, the stock air filter actually flows better than a K&N. I still run the stock filter. When I need to replace it I might go with a Uni or K&N, never have to buy another.

Mike

 

[McBike]

Let me clarify, you might be running lean, but not because you swapped air filters.

Mike