OK guys, this might be a stupid question so bear with me. I have a K&N air filter on my 400 that I want to get rid of due to the negative thing I have read about them on this board. It sounds like most of you like the UNI filters. Does a UNI flow better than the stock foam filter? Will the decrease in air flow from the K&N to a foam filter effect the way my bike runs (jetting)? Or is the difference in airflow nominal. I remember when I installed the K&N I was amazed at how much more air it moved over the stocker. Any thoughts would be appreciated. Thanks!