Cat-Back Exhaust System with Valvetronic

The Stone Exhaust cat-back exhaust system is engineered for B58-powered BMW 5 Series models, specifically the G30 540i/540i xDrive (2015-2019) and G31 540i xDrive (2016-2019). This advanced technology uses an arc-packaging method to create a vortex effect that purifies exhaust gases while maintaining optimal back pressure, aiming to enhance both horsepower and torque compared to straight downpipes. The system also features patented O2 sensor technology for real-time data accuracy and to prevent error codes. Additionally, it is built with Dual Cross-Welding Technology for increased durability. This cat-back system includes a Valvetronic remote control that offers three distinct modes: ON, OFF, and AUTO. The AUTO mode allows for customized valve opening and closing at a predefined RPM, giving the driver control over the exhaust note. The exhaust pipes are formed using a 7-axis CNC Bending Machine, ensuring exceptional precision and maintaining 98% roundness with minimal wear, preventing airflow obstruction and welding fractures. The final product is manufactured with direct spot welding by mechanical arms for enhanced strength and a refined finish. This exhaust system is OPF-compatible for European residents, meaning no coding or warranty concerns related to the Over-Optimized Particle Filter. A 2-year warranty is included. Please note that purchasers are responsible for ensuring compliance with all applicable local and federal laws regarding aftermarket exhaust system modifications.