I got this new cone filter for Xmas, it looks really cool but i'm afraid it may not be good for the engine. I stuck it on the car for 1 run and noticed large HP gains (it sounded cool too). The actual filter element, however, contains no cotton, paper, or foam-it's just braided steel, kinda like a screened porch. I know it can't filter that many small particles. Does anbody have one of these? Would you recommend putting one on?