Have been debating whether to get a K&N filter for a while, and after reading this decided to just bite the bullet and do it. Bought a 57S-4000 with new airbox lid (http://www.ebay.co.u...=item4170eaf0ae) and fitted it this morning.
Haven't really tested it properly yet, but have driven up and down the road a full times and so far the throttle is certainly more responsive, and it makes a very loud whooshing noise on acceleration which I can't tell if it's cool or annoying yet haha.






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