Evolution Racewerks Catless Downpipe, BMW 40i Fxx-Gxx B58

Expert's advice:

The Evolution Racewerks catless downpipe reduces the backpressure, which results in more power and significantly more torque, and reduces the thermal load on the turbocharger. Made out of high-quality stainless steel, this downpipe replaces the OEM downpipe and fits perfectly.

Please note that the catless downpipe can cause problems due to the road regulations in your country. Remapping the ECU is mandatory after the installation of this downpipe, in order to prevent potential "check engine light" warning signals.

Mark Hendrikx - Automotive engineer at Mosselman