Evolution Racewerks Catless Downpipes, BMW F1x M5 M6 S63

Expert's advice:

The Evolution Racewerks S63 catless downpipes significantly reduce exhaust backpressure, resulting in substantial gains in power and torque, faster turbo spool, and a noticeable improvement in throttle response. By removing the catalytic converters, exhaust gas flow is optimized and the thermal load on the turbochargers is reduced compared to the OEM setup.

Manufactured from high-quality stainless steel, these downpipes replace the original units and provide a precise OEM-style fitment for the BMW F1x M5 and M6 with the S63 engine.

Please note that catless downpipes are not road legal in most countries and may cause issues with local regulations. ECU remapping is mandatory after installation to optimize performance and to prevent potential check engine light warnings.

Mark Hendrikx - Automotive engineer at Mosselman