aFe is proud to introduce the aFe Twisted Steel® Down-Pipe with a 400 CPSI high-flow catalytic converter for the 2012-6/2013 BMW F30 335i with the L6-3.0L (N55) engine. In testing this system resulted in a max gain of 10 horsepower and 16 lbs. x ft. of torque and outflowed the restricted OE catalytic converter by up to 150%. This high performance down-pipe delivers the perfect balance of pure, race-inspired performance, in-cabin driving comfort and the excitement of exhaust sound and tone during normal cruising or aggressive hard throttle. aFe also included a massive, lightweight, 4" diameter, 304 stainless steel tube with a 400 CPSI, high-flow catalytic converter.
100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.
High-Flow Catalytic Converter:
This system uses a 48 state legal 400 cell per square inch (CPSI) stainless steel high-flow catalytic converter designed for maximum flow and performance.
Factory O2 Sensor Locations:
Factory mounting locations for all O2 sensors.
OE style brackets are included for a hassle-free installation.
aFe down pipes are engineered and manufactured in our Corona, California manufacturing facility.
Notice of Fault Codes/Check Engine Light - Using any Racing downpipe could result in a check engine light and fault codes, even with sport cats. Although we have heard of cases where no check engine light appeared, these Racing downpipes are not designed to meet emissions testing and regulations. Race software that is specific to your mods is strongly advised to better adapt your car to a racing environment, keep the fault codes from appearing, optimize power gains, and improve general drivability. Our Epic Motorsports Race software is strongly encouraged to meet all of your tuning goals.
Notice of Emissions Non-Compliance. Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. It's use is prohibited in any motor vehicle that is subject to emissions inspection or control. Legal only for racing vehicles that may never be used, or registered or licensed for use, upon a public highway. Some suppliers will not ship to certain states, requiring extra delivery time. We will advise you of any delays.
F30 / F31 / F34 (2012+) > 335i
F30 / F31 / F34 (2012+) > Hybrid 3