Takeda Cat-Back Exhaust 2012-2015 Honda Civic Si (2.4L) Coupe OnlyIntroducing the new Takeda exhaust system for the 12 15 Honda Civic Si Coupe FG4. In recent testing this system produced 9 horsepower and 9 lbs. x ft. of torque. This exhaust system is constructed from 2. 50" mandrel bent stainless steel and is MIG welded. The system uses a high flow muffler with 2. 50" tubing which improves performance across the power band while maintaining a great tone. To finish off this exhaust is a dual double wall angle cut 304