Evolve Catless Turbo Downpipes - BMW S58 (G80/G81 M3, G82/G83 M4, G87 M2)

Overview

Catless turbo downpipes for S58-equipped BMW M models, constructed from 304 stainless steel with TIG welding and back purging. Features 3.5" diameter piping that eliminates factory catalytic converters to reduce back pressure, enabling faster turbo spool, increased power output, and a more aggressive exhaust note. Compatible with stock or aftermarket exhaust systems. Not road legal; optional Leib CAN MIL Delete-R module available to suppress check engine light.

Installation summary

Installing these Evolve catless downpipes on your S58-powered BMW requires advanced DIY mechanical skills due to tight engine bay clearances and factory fastener locations, making this a job best suited for experienced enthusiasts with a well-equipped garage. Before beginning the estimated three-hour installation, ensure the engine and exhaust system are completely cool to prevent burns while working around the turbos and heat shields. You must handle the factory oxygen sensors with extreme care during removal and transfer, and carefully manage clearance around the surrounding heat shields during positioning to avoid unwanted rattling and vibration.

AI-generated overview — always verify against the official install instructions.