Scope of delivery: - Stainless steel downpipe for Audi A4 B8 2.0 TFSI FWD with 200 cell sports catalytic converterDescription: - The Y-pipe is located between the turbo and the exhaust system. It is screwed onto the original turbocharger and contains a 200 cell catalytic converter ø 120mm. It has a cross-section of 80mm in the upper area, two M18x1.5mm connections for the lambda sensor, holder and 63.5mm in the lower area due to space restrictions. The larger downpipe lowers the back pressure, reduces the load on the turbo and allows more power to be delivered, depending on the components installed up to 350 hp. To achieve the original exhaust system, a reducer from 63>54mm must be used, but for tuning, largerexhaust systems are usually used.suitable for: - Audi A4 B8 2.0 TFSI FWD (not for automatic) - Audi A5 B8 2.0 TFSI FWD (not for automatic) - Audi Q5 from 2010 model year 2.0 TFSI Quattro 180PS, 211PS and 225PS (not for automatic)Registration: For an individual approval according to §21 StVZO please ask your TÜV inspector.We would like to point out that the installation of this article constitutes a modification which invalidates the vehicle's operating license in accordance with the StVZO. Not permitted for use on public roads.