I have an 09 RK Classic, and I just ditched the faulty Fuel Pak, which would result in the bike running on one jug. My indy installed a K&N Filter and did a Power Vision Tune. The bike runs absolutely perfectly; it just purrs with no popping on deceleration either. I would like to remove the football-shaped air filter cover, leaving the K&N exposed. If I do this, will it effect the leaness of the fuel mixture? I don't want to mess with it, as it is running so dang well right now, but I do like the retro look on this bike. Your expertise is greatly appreciated.