Upgrading vehicle's exhaust system is a great way to build horsepower, free up trapped torque, and improve upon restrictive factory systems. The larger pipes, low-restriction mufflers And tuned resonators of a well-designed performance exhaust system can make a world of difference on your vehicle. The net result is lower auto exhaust backpressure, more horsepower, more torque, and a much better sound. Fit 05-08 Porsche Boxster S 987 Fits 987 Gen I MR Layout Models with 2. 7L/ 3. 2L/ 3. 4L Flat-6 Engines ONLY For Year and Model, Please Check Compatibility