Fi Exhaust | BMW F9x X3M/X4M Downpipes 200 cell / Catless

Sport 200 Cell (in stock)

With the larger cells and fast exhaust flow rate, it is smooth, durable, and does not have refractory wool burn-out problems. The higher the number of cells, the smaller and denser the hole is. The higher the back pressure, the more it can enhance torque performance, while the opposite is true for increased horsepower. Converting your stock catalyst converter (400~800 CPSI) into the Fi Exhaust metallic catalyst converters will result in significant enhancements in airflow discharge that circumvent the limitations and parameters set by car manufacturers.

Catless (Ships in 3-4 weeks)

The ultra-high flow catless downpipes remove restrictive factory catalytic convertor. They increase exhaust gas flow and performance gains, produce higher sound volume. And is usually recommended option going further with ECU tuning.

Also, mucho sound. AutoTopNL Approved!