Custom Downpipe Kit for Audi S5 B8,5 with the 3.0 TFSI engine. This downpipe comes only as the DE-CAT version. This downpipe is made using CNC technology and is fully made ut of Acid-Resistant Steel. The Catalytic Converter (CAT) is either completely removed or a high-flow one is fitted in its place, which helps with reducing […]