Have you already bought the K&N? If you are talking about the dropin replacement filter, hopefully you have not. I bought one and was extremely disappointed with it. In fact I took it out and put a stock filter back in. It may be coincidence but after putting the K&N filter in my MPG's dropped by at least 1MPG and of course I saw absolutely no performance gain (not that I thought I would). Only reason I tried it is I thought it would be easier to just recharge the K&N versus buying a new filter every time but after reading the instructions and having to clean it out then let it dry then spray it then let it dry again...just stick with the stock one and do what I did and go buy a bunch and keep them handy.
'08 Red Rock Unlimited Rubicon / AEV 2.75" Lift with Remote Reservoir Shocks / AEV Heat Reduction Hood / AEV Front & Rear Bumper with Tire Carrier / AEV Skidplates & Rear Corner Guards / Riddler Diff Covers / Mopar Enhanced Rock Rails / Warn 9.5ti Winch / Mopar Gas Cap Cover / 4.88 Gears / IPF 900xs Drive Beams / Eagle Eye HID Spotlights / Daniel Stern Headlights / 17" AEV Pintler Wheels with 35x12.5r17 BFG Mud-Terrain KM2's / Tuffy Security Drawer / sPod and Benchmark Dual Battery System / Cobra 75 CB / Lockpick with Front and Rear Cameras / Katzkin Heated Seats / Line-X Interior / Hitchsafe Key Vault / and a Trasharoo and a lot more little stuff or just stuff I forgot!!!
( )_) ( )_)-o-)_)