Factory rated at 550cc - 565cc Flow rate @3bar. 2006-2014 Subaru Impreza WRX 2.5L H4 Turbo - 2.5 GT, STI, STI Limited, STI Special Edition, STI Sport, WRX, WRX Sport, WRX TR, WRXSS. 2006-2014 Subaru Impreza STI 2.5L H4 Turbo - 2.5 GT, STI, STI Limited, STI Special Edition, STI Sport, WRX, WRX Sport, WRX TR, WRXSS.
