While changing my oil yesterday I decided to "recharge" my K&N air filter. It didn't look real dirty, but holy crap, after I sprayed that cleaner on it, dirt just poured out all over the place! I cleaned it too at the beginning of February. With dryer tempatures, dirt is flying everywhere! I'd highly recommend everyone cleaning/replacing their air fliter if you already haven't. I'll take a pic tomorrow night of the dirt stain it left on my pavement.
Cheers! (I wish I was English)