aFe MACHForce XP Cat-Back Exhaust 10-13 VW GTI L4 2.0L (T) MKVIIn recent testing this Mach Force XP cat back exhaust system produced 10 horsepower and 9 lbs. x ft. of torque. This exhaust system is constructed out of mandrel bent, 2. 50 IN stainless steel and includes MIG welded hangers and OE style band clamps for a simple, leak free bolt on installation. A 2. 50 IN high flow resonator is used to keep exhaust drone to a minimum while maintaining a sporty sound. aFe utilizes 3. 5 IN double wall, angle cut,