Performance Motorsport Parts DPF Delete downpipes are designed to replace the stock DPF removing the restrictive section of your exhaust. Our Performance downpipes allow for better exhaust flow resulting in increased power and torque while also improving throttle response. ---Manufactured from highest quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing DPF replacement to get the most from the N47 engine ---Designed to improve power and torque across the entire RPM range ---Sold for off road and track use only Fitment: BMW 3 Series E90, E91, E92 & E93 320D N47 2007-2013 models Please note: This item is not suitable for the M47 engine.