Performance Motorsport Parts Sports decats are designed to replace the stock catalytic converter removing all restriction, Our Performance decats allow better exhaust flow resulting in increased power and torque while also improving throttle responsiveness. ---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 N54 engine ---Designed with flexi’s to reduced strain on the exhaust system ---Sold for off road and track use only Fitment: BMW 3 Series E90, E91, E92, E93 335i 2006-2010 models Please note this part will only fit N54 engine models.