Tomei Unequal Exhaust Manifold HeadersThe release of the FA20 WRX resulted in huge disappointment to long term Subaru fans who fell in love with the boxer rumble. Fortuantely, Tomei have brought it back! Not only will you hear and feel the classic EJ boxer note, you will experience a significant increase in performance. Every flaw of the OEM header has been addressed and improvised during the development of the Tomei header, resulting in power gains you can feel throughout the powerband