Well done Dave. I've had the K&N AirCharger setup for some time and it's great. I love the growl you get from it - it's provided my 'audio noise' in the absence of a modified exhaust setup - hoping to rectify that soon though
The UIM looks great as well, very lucky of you to be able to source one from ebay!
FumDuk, the other 'smaller' filter is for the air/flow sensor (I believe) which plugs directly into it. Without that filter, your engine warning light will be lit on the dash. (Whoops, just saw Dave answered the question already!)
Dan