Wagner Tuning Audi S4 B9 300CPSI EU6 Downpipe Kit

Downpipe Kit with 300CPSI Racing catalyst for Audi S4 B9 / S5 F5 3,0TFSI made out of high quality stainless steel 1.4301 (SS304) complete 2x Ø3 and adapter for stock exhaust 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 optionally also available with Ø76mm (3 inch) middle silencer-replacement pipes (sporty, dull sound)

Error display in the DME possible.