Borla 15-16 Dodge Challenger Hellcat 6.2L V8 ATAK w/ Valve Simulator CB Exhaust Factory ValanceBorla 15 16 Dodge Challenger Hellcat 6. 2L V8 ATAK w Valve Simulator CB Exhaust Factory Valance This system features the aggressive ATAK(r) sound and a merge X Pipe for increased performance and improved sound. This system INCLUDES MDS (multi displacement system) valve simulators which ELIMINATE the MDS valves. This avoids any warning lights on the dash while providing maximum flow at all times. Tips NOT included. Use factory valance tips. BORLA(r)