Remus Cat-back Exhaust With Integrated Valve- Mini F56 Cooper S | JCWSOUND CONTROLLER NOT INCLUDED Cat back sport exhaust system The REMUS cat back solution for the Mini type F56 F57 Cooper S and John Cooper Works is designed to work in perfect cooperation with the stock catalytic converter of the engine. Reduced back pressure and optimized flow dynamics grant a significant increase in power and torque in combination with the well known sonorous REMUS sound. Due to lightweight construction and sophisticated materials,