I was in a huge debate between Injen, Fujita, and Weapon-R. Weapon-R is just weapon-r. I've had fujita for my previous tib and it was nothing special, just overpriced. But to answer your question, If you look at it the ram-air kit bascially converts it into a cheaper looking cold air intake. Think about it, your just extending it to somewhere outside the engine bay, like a CAI. You are MUCH better off buying a CAI or a SRI. I just ordered a Injen SRI here from a member for 130.00. If you're afraid of Hydrolocking than buy the Injen water cover, it serves the same purpose as Weapon R's plastic RAM AIR cover.
p.s. Do yourself a favor and don't get it. Ram air in a Tiburon. As if we already don't have it bad enough. A Korean car that has a Spanish name that utlilizes Weapon-R's "dual velocity" technology that also has the RAM-AIR upgrade attatched to it.