Active Autowerke BMW Exhaust Stubbies for E9X M3 (11-020) DRIVE_RWD The end result is increased

The end result is increased exhaust flow that results in faster turbo spool-up

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Active Autowerke BMW Exhaust Stubbies for E9X M3 (11-020) DRIVE_RWD The end result is increasedThe Active Autowerke BMW Exhaust Stubbies for E9X M3 provide a cost effective solution to utilize your existing BMW factory catalytic converters with the Active Autowerke Signature Series X pipe. Designed for enthusiasts who want versatile performance options, the Stubbies allow easy switching between track and street configurations without sacrificing OBD11 readiness compliance. Transforms factory primary catalytic converters into a smaller, compact