aFe is proud to introduce the aFe Twisted Stee Down-Pipe with a 400 CPSI high-flow catalytic converter for the 2012-2013 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. This unit also comes with a lifetime warranty.
aFe down pipes are engineered and manufactured in our Corona, California manufacturing facility.
Note: This is a "Race Only" product used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state and federal laws.
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