DE CAT 3” TO 2.5” DOWNPIPES FOR AUDI 2.7L S4/RS4 (B5) AND A6/ALLROAD (C5)
Performance oriented aftermarket downpipes increase horsepower on a turbocharged vehicle by enabling higher flow of exhaust air than the OEM pipes. Vacating exhaust air more efficiently through optimized and smooth bore flow paths ensures that the exhaust pressure is constantly lower than the intake pressure, allowing the engine to breathe in more air, burn more fuel, and thus generate more power.
Engineered with improved custom design of flow path and specifically for the 2.7L V6 Bi-Turbo Audi S4/RS4 (B5) and A6/Allroad (C5), this high flow downpipes product features a mandrel bent 3" to 2.5" piping constructed from high quality T304 stainless steel.
TIG welded at all joints, it also combines a cracking and corrosion resistant surface and an obstacle free internal wall. Catalytic converters are removed from upper sections to further eliminate restrictions on flow. The hybrid inlet flange will directly bolt on to K03, K04 and RS6 turbos.
As a result of professional design and top-notch craftsmanship, this product provides an immediate turbo spool-up and an increase up to 20hp at high RPM.
IMPORTANT: This product does NOT fit Tiptronic and A6/Allroad with 6-speed manual transmission.