As an Automotive expert, I tested this product on my car .As my tests showed it did not deliver on its promise of enhancing the car's performance. The muffler made the exhaust note louder, but did not increase horsepower. The finish on the muffler was also subpar, with several scratches and dents. The only pro is that the installation process was easy. Overall, I would not recommend this product to anyone looking for true performance gains..