FWD Audi 8V A3 Catted Downpipe/ VW Golf Mk7 Catted Downpipe 2008 4L BMW F10 550i xDrive

4L BMW F10 550i xDrive N63/TU 4

Power gains of up to 40hp to the wheels on a stock vehicle

Removes the factory sound resonator for better sound

MST Performance focuses on performance

This placement takes advantage of fresh airflow channeled from the OEM ducts

FWD Audi 8V A3 Catted Downpipe/ VW Golf Mk7 Catted Downpipe 2008 4L BMW F10 550i xDriveHIGHLIGHTS Increased Power and Torque Faster Turbo Spool Improved Exhaust Note PROFILE The ARM Audi A3 Catted Downpipe is an essential upgrade if you're looking to get the most from your Gen 3 EA888 equipped Audi. The stock downpipe is built with a dense catalyst that hinders exhaust flow on your EA888 engine, causing higher back pressure, increasing turbo lag and causing your turbo to work harder. Replacing your OEM downpipe with the ARM A3 Downpipe