valvetrain and upgraded intake manifolds may already be maxing out the duty cycle of the factory Type-S injectors

1 specification Made from 4140 forged chromoly steel (2X stronger than billet steel)

* This system is suitable to 2

HP Gains: 26 - 30 hp

Mishimoto Cat-Back Subaru Impreza WRX/STI 15+ VA TITOLO:Manufacturer Code MMEXH-WRX-15 valvetrain and upgraded intake manifoldsHere at Mishimoto we've decided to expand our line of 2015 WRX parts. Mishimoto is proud to release the 2015+ Subaru WRX STI cat back exhaust. One of the biggest complaints 2015 WRX owners have is that the stock 2015 WRX exhaust systems lack an aggressive tone. By installing the Mishimoto 2015 WRX cat back exhaust allows the entire system to breathe easier, providing horsepower, torque, and a rich exhaust tone. After comparing many different muffler