Unleash the true potential of your BMW N55 engine with our state-of-the-art downpipe, designed for unparalleled performance and an intense driving experience. - Diameter of 76mm: For optimal flow characteristics and maximum performance. - High quality cast stainless steel 1.4301 (SS304): Our downpipe is made from premium stainless steel to ensure maximum durability and corrosion resistance. - CAD-Designed: Every detail has been carefully designed in CAD to ensure a precise fit and optimum performance. - 2 Lambda sensor connections: For precise tuning and optimum power delivery. - Racing main catalytic converter (200 CPSI EU6 coating): Our high-performance main catalytic converter ensures maximum exhaust gas purification while meeting the highest environmental standards. - 100% perfect fit, simply replace with standard part: Our Y-pipe is perfectly matched to your vehicle and can be effortlessly replaced with the standard part, without any additional adjustments. - Less thermal load on the turbocharger: Thanks to our advanced design, the thermal load on your turbocharger is reduced, which increases durability and performance. - More power through back pressure reduction: Our downpipe has been developed to reduce back pressure and increase the performance of your vehicle, both on the road and on the race track. - Significantly more torque: Feel the difference with a significant increase in torque that gives you a powerful driving experience. Experience the ultimate in performance and driving pleasure with our downpipe - a must for any enthusiast looking to get the best out of their vehicle. The downpipe Kit is suitable for the following vehicles: BMW 135i E82/E88 BMW 335(x)i E90/E91/E92/E93 part number: 500001005 Error display in the DME possible.. 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.