Reviewed By James W. C (Littleton, MA) Reviewed for a 2009 Porsche Cayenne —2/16/2007 5:35 AM
I make a point to purchase a K&N filter for every vehicle I own. I experience better engine performance, fuel economy and the convenience associated with a permanent filter, which equates to a cost saving by not having to constantly replace paper filters. K&N fileters are well made and their performance doesn't degrage with use/age. I wish K&N would offer a replacement pollen filter for my x-type Jag.