So begs the question does all this cost actually do much for performance over a standard box and decent panel filter 
Yeah it kick the airboxes arse.

I put my smooth airbox in a skip and the k&n panel filter.

Well my dad did .

I dont mind as i would of never gone back.

It does make a world of a difference in sound ,good dump valve noise and better performance .I can fell its better. I have to try every kind of mod tell i find one thats better. Like spark plugs ,you cant beat ngk platinum PFR6Q .I tryed nology ,denso and the £100 pluse plugs ,they where a fail big time.
