Mishimoto's performance intake for 2015–2017 Subaru STI in wrinkle-black features a mandrel-bent aluminum pipe, heat shield and a serviceable oiled air filter to reduce intake temperatures and increase airflow. Dyno-proven gains cited at up to 20 whp and 18 wtq, with included hardware for a bolt-on installation that maintains safe air/fuel ratios and works with the stock tune.
Mishimoto 2015 Subaru STi Performance Intake - Wrinkle Black