Gravity Performance decats are made to completely replace the stock catalytic converter eliminating all restrictions. Our Performance decats improve throttle response and allow for improved exhaust flow increasing power and torque. ---Manufactured from high quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing catalyst replacement to get the most from the EJ20 boxer engine ---Designed to improve power and torque across the entire RPM range ---Sold for off road and track use only Fitment: Subaru Impreza Classic GC8 1993-2000 all turbo models.