Scope of delivery: - Stainless steel downpipe for Audi A4 B7 2.0 TFSI Quattro with 200 CPI sport catalytic converterDescription: - The downpipe is located between the turbo and the exhaust system. It is bolted to the original turbocharger and includes a 200 CPI catalytic converter ø 120mm. It has a cross-section of 80mm in the upper section, two M18 ports for lambda sensors, and in the lower section, due to space, 63.5mm. The larger downpipe reduces backpressure, relieves the turbo, and allows for higher performance, depending on the installed components, up to 350hp. To connect to the original exhaust system, a 63>54mm reducer must be used, but larger exhaust systems are usually used for tuning.Compatible with: - Audi A4 B7 2.0 TFSI QuattroRegistration: For individual approval according to §21 StVZO, please ask your TÜV inspector or our partner company Exclusive-Tuningparts e.K. at https://go-street-legal.com/eintragungsformular/Please note that the installation of this item constitutes a modification that invalidates the vehicle’s operating permit under the StVZO. Not permitted for use on public roads.