If your after a panel filter Try a pipercross one which is the same as the VWR one so must be ok. It's lightly oiled foam. I have one on mine and it's been fine though I doubt they make any difference in performance really.
I'm going to get either the pipercross stage 2 induction kit of an ITG maxogen as they're the only ones I think actually work. The carbonio doesn't look a good design IMO.