prototyping and advanced sound-analysis tools,BORLA® engineers spend countless hours tuningexhaust systems to best reflect the personality andperformance of vehicle applications.The result is an enhanced driving experience. Withunrivaled clarity, the BORLA® exhaust note can help adriver stay within the powerband through a difficultsection, using the exciting sensory feedback of sound.With unrivaled clarity, the Borla exhaust note can help a driver stay within the powerband through a difficult section, using the exciting sensory feedback of sound. S-Type Cat-Back Exhaust System. Million Mile Warranty 2007-2010 BMW 335i/ 335xi Coupe/ Sedan 3.0L 6 Cyl. Automatic/ Manual Transmission Rear Wheel Drive (RWD)/ All Wheel Drive (AWD) 2-Door