The kit also includes a fully serviceable Mishimoto oiled air filter, which provides a 16% increase in filter surface area, allowing for greater airflow and superior filtration. The Mishimoto BRZ / FR-S / 86 Performance Cold-Air Intake includes a powder-coated airbox to ensure the hot engine bay does not heat soak the air filter.
In all honesty it is very nicely built and very well-made, I really don’t see a huge difference. And the price is pretty high as well. But that’s pretty much it