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 optimized
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.