FMIC.Pro electronically controlled catback exhaust system – BMW X4 F26 20i / 28i / 30i / 35i 2014–2018
The FMIC.Pro catback exhaust system is designed to improve exhaust flow and produce a distinctly sportier soundscape.
The 76 mm (3.0”) pipe diameter combined with the muffler design produces a deeper and fuller sound under load, while maintaining driving comfort during normal driving – especially when the exhaust valves are closed.
The exhaust system is made entirely of SS304 stainless steel, which resists corrosion and high operating temperatures. CNC-bent pipes ensure uniform geometry and precise fitment to the original mounting points. Installation is straightforward and based on a plug & play principle. All welding seams are TIG welded under argon gas protection, ensuring clean, finished, and completely airtight joints – essential for long-term durability.
CNC-machined 10 mm thick flanges are used at the connection points. They provide high rigidity, reduce the risk of deformation caused by thermal cycles, and ensure uniform sealing pressure across the entire connection surface.
The exhaust system features electronically controlled exhaust valves that regulate the exhaust gas path at the rear:
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Valves closed: Exhaust gases flow through the entire muffler system, producing a subdued sound and good driving comfort for daily use.
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Valves open: Exhaust gases bypass the rear muffler, making the sound louder, more direct, and sportier.
Thanks to this solution, the driver can adjust the exhaust system's soundscape according to the driving situation and their own preferences. The exhaust valves are controlled by the included control unit and two remote controls, which allow for immediate switching between operating modes.
To maximize performance potential, the FMIC.Pro catback system is recommended for combination with a better-flowing downpipe front pipe, especially in turbocharged engines.
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