Just purchased a 2006 Elise SC here in Canada and loving it so far! I was planning to take out the K&N air filter for cleaning but after doing research, I realize it is not easily accessible from the back side, and i dont have a jack/tools to access it from the wheel well side as well. Then I was thinking of just using paper filter for next season. Just wondering on thoughts/experience on how much the K&N or BOE foam filters improve performance, vs stock filters? How about CAI? I am concerned about CAI sucking all the road debris due to its placement, but also would love to hear more of the SC induction sound!