What aftermarket intake options are available?
You have the option of just changing over the stock panel air filter with an aftermarket re-usable oiled panel air filter such as K&N. If you were just after the best value for money, this would be your best bet. The performance gain is minimal and s barely noticable, the only major change you get is slightly more air induction noise. If you wanted to change the entire air filter setup, you can either consider a Short Ram Intake (SRI) which has the pod filter sitting in roughly the same position as the stock air filter box, or you can get a Cold Air Intake (CAI) which has the pod filter located behind the passenger side fog light on the bumper. There is a SRI available made by K&N, and a CAI made by Fujita. There is no major performance gains with these options either, but there is a massive increase in induction noise. Threads of interest: AIR POD?