Your E46 BMW M3 has an exhaust system on it and you are still itching to get more power and a more aggressive sound. Well Agency Power has developed Section 1 and 2 pipes to give you a complete header back race exhaust system. The Section 1 and Section 2 performance pipes are sold individually and were engineered with modularity in mind. The all T304 stainless steel pipes feature TIG welding, thick flanges, gaskets, and a complete polished finish. The Section 1 pipes replace the additional mufflers and add high flow resonators.