Wagner Tuning Competition Downpipe Kit with 100-cell Catalytic Converter for Audi RS3 8P & TTRS 8J (2.5 TFSI) Discover the Wagner Tuning Competition Downpipe Kit – the ultimate solution for maximum performance and sound for your Audi RS3 (8P) or TTRS (8J)! The downpipe with two 100-cell racing catalytic converters eliminates the pre-cat, drastically reduces exhaust back pressure, and unleashes the full potential of the 2.5L TFSI engine. Why this downpipe kit is a must-have for your 2.5 TFSI: Massive performance increase: Significant reduction in exhaust back pressure leads to noticeably more torque and power across the entire rev range. Thermal relief: Improved exhaust flow reduces the thermal load on the turbocharger and increases its service life and stability. High-performance catalytic converters: Equipped with two 100-cell racing main catalytic converters for maximum exhaust gas purification and optimal flow. Premium material: Made from high-quality 1.4301 (SS304) stainless steel for extreme durability and corrosion resistance. Optimal diameter: Generous cross-section enlargement from 90 mm to 2 x 70 mm for optimal airflow. Perfect fit: 100% plug & play – easy replacement for the stock part without additional adjustments. Technical details & vehicle information The Wagner Tuning Competition downpipe kit was developed to eliminate the pre-catalytic converter and revolutionize exhaust gas flow. Reducing back pressure is the key to unleashing the power of the 2.5L TFSI engine. Features: Material: 1.4301 (SS304) stainless steel Catalytic converters: 2x 100 cells/inch racing main catalytic converters (without pre-catalytic converter) Connections: 1x lambda sensor connection Fit: Compatible with original main catalytic converters. The kit is plug-and-play compatible with the following models: Audi RS3 8P (2.5L TFSI) Audi TTRS 8J (2.5L TFSI) Important note regarding the cardan shaft:Not suitable for vehicles with cardan shaft 8J0521101AB. Important note regarding use and approval: This downpipe kit is not approved under the German Road Traffic Regulations (STVO). An error message may appear in the DME (Digital Motor Electronics). A software adjustment is required for optimum performance and error suppression. Part number: 500001003 Experience ultimate performance with our downpipe kit – your first choice for outstanding driving pleasure! Disclaimer for catalytic converters It should be noted that Wagner Tuning catalytic converters are intended for use on OEM vehicles for performance optimization. They are NOT intended for use in conjunction with ECU tuning. Wagner Tuning GmbH & Co. Kg. accepts no responsibility for damage caused by modifications to a vehicle, such as a tuned ECU and/or 'burble' style tunes. Wagner Tuning GmbH & Co. Kg. is also not responsible for damage caused by engine malfunctions that create rich/lean conditions that are detrimental to the catalytic converter. All claims regarding a catalytic converter are subject to a warranty check. In order for a warranty to be honored, Wagner Tuning GmbH & Co. Kg. requires the purchaser to prove that the engine has been set up unchanged and in accordance with the original manufacturer's specifications and has been kept in proper working order. The end user assumes all responsibility for the legality of the use of a non-OEM catalytic converter on their vehicle for the region in which it is used.