Downpipe Kit without precatalyst converter and optional with 2x 200CPSI Racing catalyst for Audi TTRS 8S and RS3 8V Facelift made out of high quality stainless steel cast 1.4301 (SS304) without precatalyst for maximum performnace complete 2x �70mm CAD-designed and flow optimizied 2 lambda probe connections 100% perfect fit, plug and play less thermal load on the turbocharger more power by reducing back pressure significantly higher torque suitable for Audi TTRS 8S and for Audi RS3 8V facelift models compatible to stock after-catalyst-pipes (not GPF) optional including after-catalyst-pipe with 2x 200CPSI racing catalysts (for GPF-Version the exhaust needs to be cut) Catalytic Converter Disclaimer It is to be noted that Wagner Tuning catalytic converters are intended to be used on OEM vehicles to optimize performance. They are NOT intended to be used in conjunction with an ECU tune. Wagner Tuning assumes no responsibility for damages caused by modifications made to a vehicle such as, a tuned ECU and/or 'burble' style tunes. Wagner Tuning is also not responsible for damages caused by engine malfunctions creating rich/lean conditions that are detrimental to the catalyst. A warranty audit will be performed on any claim regarding a catalytic converter. In order for a warranty to be honored, Wagner Tuning will require the purchaser to provide proof that the engine was unaltered and tuned to the original manufacturer's specifications and maintained in proper operating condition. The end user assumes all responsibility regarding the legality of use of a non-OEM catalytic converter on their vehicle for the region in which it is used.