Our Turbo Back Exhaust System for the Subaru Impreza WRX & STi Shark Eye will allow your Impreza to breathe far more easily, resulting in improved power output and throttle response. Running from the turbo back it includes a decat downpipe (replacing the restrictive catalytic converter), a decat centre section and culminates with a quad tailpipe back box. Features: Manufactured from T304 stainless steel TIG welded, CNC machined flanges Gaskets and bolts included Please note: sold for off-road/track use only - will not pass an MOT emissions test.