On my car, the Stock air box was crap, utter crap. So i went with the tried and True BAT MAF adapter, and a K&N Ru-1785, its a conical filter but its got more airflow room i think. anyways, i didnt notice any top end power, the car is basically the same for anything above 4k rpm's, but i really noticed a difference in low RPM's, from a stop i can squeel the tires now (i have an ATX) and the sound makes me wanna jump for joy everytime i hear it. It was worth it in my case, it was fun to do and sounds great and i got some MPG too.
