---Manufactured from highest quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Sold for off-road / track use only ---Direct replacement for the existing manifold ---Removes the restrictive catalytic converter to increase horsepower capability Compatible with: ---Volkswagen Golf MK5 2.0 FSI 2003-2012 models ---Audi A3 8P 2.0 FSI 2003-2012 models.