Wagner Tuning Audi S4 B9 300CPSI EU6 Downpipe Kit
Downpipe Kit with 300CPSI Racing catalyst for Audi SQ5 FY 3,0TFSI made out of high quality stainless steel 1.4301 (SS304) CAD designed and flow optimised 300CPSI with EU6 coating Racing Metal Catalytic Converter 100% perfect fit, replace OEM less thermal load on the turbocharger more power by reducing back pressure significantly more torque Error display in the DME possible.