Borla 16-18 Ford Focus RS 2.3L MT AWD ATAK Catback Exhaust w/ Black Chrome TipThis system is equipped with a "Sound Suppressing Valve" simulator which ELIMINATES the valve. This avoids any warning lights on the dash while providing maximum flow at all times. System features Boryla's Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full bodied sound to the Borla(r) mufflers. The mufflers