Ya if I had expendable income I would buy a cai and get it tuned for it but I would rather spend it on long tubes and tunes. Just personal preference, I'm on a budget so id rather get more noticeable hp from long tubes
K&n drop in filter is what I always use. But warning. Do not over oil them or you will have some problems. Alot of retards complain about the filter cause they over oil them.