Tomei Equal Length Exhaust Manifold 2008-2014 WRX / 2004-2021 STIThis is the Tomei Equal Length Exhaust Manifold and is a great upgrade for those of you looking to optimize the exhaust flow for improved power and performance. The factory exhaust manifold leaves much room for improvement, and Tomei has executed a fine example constructed of durable stainless steel materials that are combined with smooth bends. The result is more horsepower, more torque, and quicker turbo response. An excellent upgrade for those of