Just a quick one
 

Are k&n air filters worth the extra money? (Compared to the stock paper ones)

I would say so, wouldn't say they are gods gift to the car but it can't help but let the car breath a little easier. Plus you can clean them so over a long period it will save you a little cash.

Ok cool. Thanks for the reply. Will give it a go. Think I'll benefit from being able to clean it.