StephInfection

Has anyone installed a K&N drop in replacement filter in a P5? If so, how does it work?

a223818

Not sure of what you are asking? It replaces the stock air filter. Nothing else is required

Phantom Cruiser

yep...just drop it in...and when it gets dirty, clean it.

rustychops41

I had one before changing to a CAI. Didn't notice any difference whatsoever in the car, but I had purchased it as an economical choice since I drive about 65K miles a year. I do know that many places will tell you "they don't make one for the sedan, only the P5." I got my old one if you want it cheap. (Pay for Shipping and it's yours)

StephInfection

i was just wondering if there was any noticeable improvement in performance.

rustychops41

None that me or my Glute-O-Sensor (butt) could tell.

kgo

i have a k&n drop-in in my 03.5 auto p5 and i don't notice any difference. if there is any performance benfits, it's so marginal there might as well not be any. if you're looking for a cost benefit in the long run, then this is what you're getting.

gcs118

You hardly notice a difference with a SRI or CAI...much less a drop in air filter