The BMW Performance Exhaust is a good choice if you are looking for a deeper grumble but there are a variety of BMW aftermarket exhausts that are much better for power output and sound. Remus exhausts for BMW are well known as direct OE replacements that conform to strict German road safety standards. In addition, Eisenmann, Active Autowerke and Vorsteiner all produce high performance BMW exhaust systems that will dramatically improve flow, performance and sound on your BMW E92 M3.
