The Mishimoto performance air intake for 2015+ Subaru WRX applications is a complete bolt-on kit that uses the stock intake duct to feed a cleanable, high-flow oiled air filter. It includes a wire-reinforced lower induction hose that resists collapse under suction and boost, amplifies turbocharger spool and BPV sound, and delivered dyno-proven gains up to 33 whp and 30 wtq on a stock tune; the kit is made in the USA and is discontinued.
Mishimoto 15 Subaru WRX Performance Air Intake Kit w/ Box - Polished