I have an almost standard 03 JDM STI, and wanting to know what air filter would be good for it? Powerstation told me not to change the standard air box cause it messes up the map and they have tried alot of induction kits and nothing seem better than the standard air box. Also wanted to know what people thought about the K&N Typhoon induction kit (inner wing, cold feed) and what problems they come across. What induction kit is good? Cheers people.