Scope of delivery:- Downpipe for Audi A4 B7 2.0 TFSI ø 76mm with 200-cell racing cat/metal cat stainless steelDescription: - The downpipe is located between the turbo and the exhaust system. It bolts to the original turbocharger and includes a 200-cell catalytic converter ø 120mm. It features a 76mm cross-section in the upper area, two M18x1.5mm ports for the lambda sensor, and in the lower area, due to space constraints, 63.5mm. The larger downpipe reduces backpressure, relieves the turbo, and allows for higher output depending on the installed components, up to 350hp. To connect to the original exhaust, you must use adapter 122515 and clamp 350208.Registration in accordance with §21 StVZO must be performed by an officially recognized expert. Since exhaust behavior depends on several factors such as exhaust temperature, engine output, displacement, etc., the specified Euro standard cannot be guaranteed.Compatible with: - Audi A4 B7 2.0 TFSI FWDRegistration: 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 will void the vehicle's operating permit under StVZO. Use on public roads is not permitted.Optional matching parts: - Reducing sleeve from 63.5mm to original exhaust connection 55mm 122515 - Exhaust clamp 63.5mm 350208