MAD N20 4" Downpipe W/ Bracket BMW 228 328 428 528

Upgrade from the stock N20 downpipe to the MAD N20 4" catless downpipe for maximum airflow, power, and sound! Upgrade to the MAD BMW N20 4" downpipe to eliminate the backpressure caused by your stock catalytic converters. By upgrading to our downpipe, your turbo can now spool faster and achieve maximum power. As a bonus, your car will sound a lot nicer as well. Expect up to a 30HP increase on a tuned BMW N20with stock turbo, even more on cars with upgraded turbo. The flex pipe Section will help reduce the stress and unwanted vibration caused by heat and engine Movement.  Features: Smooth bends for maximum airflow without any drone Up to 30HP increase on the stock turbos, even more on upgraded turbos Lifetime warranty on defects and fitment 90 day return period All orders ship in 1-2 business days   Fitment: Fits N20 engines only, please check your car and confirm that it has the N20 engine before placing an order. 2014-2016 228i 2012-2015 328i  & Xdrive (F chassis) 2014-2016 428i & Xdrive 2012-2016 F10 528 & Xdrive  If you are having issues with the downpipe fitting with the stock bracket, please remove the stock bracket   Emissions Disclaimer:This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted. By purchasing this product, you acknowledge and agree that: You are responsible for compliance with all applicable emissions laws and regulations. MAD and its affiliates disclaim any liability for improper or unlawful use of this product. Use of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.