The Evolution performance exhaust system for the BMW consists of a single-central muffler with valves and bigger link pipe tubes with a middle muffler, all designed to make the performance and workmanship of the Evolution as perfect as its looks. With no second set of cats—(unlike the stock system), the whole system is designed to give the smoothest flow—and the power and torque gains of the BMW with the Evolution system are simply amazing. Crafted entirely from titanium, the Evolution system has a unique sound to complement its substantial increase over a very wide rpm range. In-depth engineering has produced a sound completely different from the stock system, giving a deep and sporty sound – with no unwanted overtones or drone, and also a significant change to the sound with the valves in the open or closed positions. The Evolution system needs no re-programming of the ECU because it doesn’t trigger any warning lights. With tailpipes in titanium or carbon, and a handcrafted rear diffuser, all available as optional extras, the BMW Evolution is as beautiful as it is powerful.
Please note that certain aftermarket exhaust systems may not comply with applicable US (including California) laws and regulations, and may therefore be prohibited for use on highways or roads, or on roads or vehicles otherwise subject to emissions control requirements. California prohibits the use of any aftermarket exhaust system that modifies, removes or replaces original equipment catalysts, unless CARB has issued an Executive Order as to such part or system.