I "removed" mine.... it became permanent when I discovered I had broken it beyond repair.
No power boost to speak of. Just a lot more noise, particularly in cold weather. I'm not sure I'd call it "sporty" either. It sounded sportier in my opinion before I took it off. Now it just sounds like my mom's old Chevette.
well i did it and it does sound better, makes me wonder what in intake sounds like. no change in performance though as far as i noticed. and yeah i broke the two clips on the top, probably b/c its fricken cold outside but i guess that's why we have epoxyies and such to repair things like that if need be. it does help the sound though, basically what i expected for free.