it's just a new unobstructed intake pipe.. no different then the others really, with established benefits behind it, but a lot cheaper then springing for an entire brand name set-up
I was going to make my own, but figured it would be easier to just buy his when the time came - it's a lot prettier then what I could do and no headaches doing it myself
I would definatley buy his before a KN, etc - if for no other reason then he's a fellow enthusiast who seems to put a lot of time into his car