Active Autowerke BMW Exhaust Stubbies for E9X M3 (11-020) DRIVE_RWD 32% cfm Flow Gain

32% cfm Flow Gain

14mm O-ring

AutoMeters Race Proven Digital Stepper Motor Electric Instruments

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

The Autometer Electronic Ammeter Will Provide Accurate

Active Autowerke BMW Exhaust Stubbies for E9X M3 (11-020) DRIVE_RWD 32% cfm Flow GainThe 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