CTS Turbo S55 3″ High Flow Catted Downpipes (F80 F82 F87 M3/M4/M2C)

CTS Turbo is proud to announce the release of our High-Flow CATS for BMW F80/F82 M3/M4/M2 CompetitionOur stainless steel high-flow CAT downpipes allow for faster spool, better transient boost response, higher boost, and great sound.  Our downpipes are the first part of our modular exhaust system and are compatible with factory mid-pipes and our upcoming CTS Turbo mid-pipes.  You should expect strong torque gains when paired with appropriate tuning software.  We used CAD simulation to streamline the flow of exhaust gasses and ensure seamless integration with the factory and CTS exhaust components.  Many hours of R&D were spent to ensure a perfect fit, smooth exhaust flow, and excellent sound.Use of Bootmod3 software compatible and is strongly recommended. CEL will illuminate if correct software tuning is not used.Features:Large 3″Durable 304 food-grade stainless steelLaser-cut flangesFactory-like placement of O2 sensorsDesigned using the latest 3D scanning technologyExhaust flow simulated with CAD software to ensure optimal flow routingPerfect fit with factory or aftermarket mid-pipesAggressive sound – really makes that S55 screamFitment:2015 BMW S55 M3 (North America)2015 BMW S55 M4 (North America)2018 BMW S55 M2C (North America)Stage 2 software is required to avoid check engine light.