Scope of delivery: - Stainless steel downpipe for Audi A4 B8 2.0 TFSI FWD with 200-CPI sport catalytic converterProduct description: - The downpipe is located between the turbocharger and the exhaust system. It bolts to the OEM turbocharger and includes a 200-cell catalytic converter ø 120mm. It features an 80mm cross-section in the upper area, two M18x1.5mm connections for the lambda sensor, bracket, and, due to space constraints, 63.5mm in the lower area. The larger downpipe reduces backpressure, relieves the turbo, and allows for more power—up to 350 hp, depending on the components installed. To connect to the original exhaust system, a 63>54mm reducer must be used, but largerexhaust systems are typically used during tuning.Compatible with: - Audi A4 B8 2.0 TFSI FWD (not for automatic transmission) - Audi A5 B8 2.0 TFSI FWD (not for automatic transmission) - Audi Q5 from 2010 model year 2.0 TFSI Quattro 180 hp, 211 hp, and 225 hp (not for automatic transmission)Registration: For individual approval in accordance with §21 StVZO, please contact your TÜV inspector.Please note that the installation of this item constitutes a modification that invalidates the vehicle’s roadworthiness approval under the StVZO. Use on public roads is not permitted.