This 524hp Subaru Impreza WRX STi hits the dyno with equal length headers and a screamer pipe, unleashing the full voice of ...
BaselineProsThe newly designed '08 Subaru Impreza STI, powered by the infamous 2.5L boxer engine is rated at a factory 305 hp and 290 lb-ft of torque. The '08 model continues the Subaru legacy as its ...