Valved Cat-Back Exhaust System

The Turner Motorsports Valved Cat-Back Exhaust is a performance-oriented exhaust system engineered for the BMW E46 325 and 330 models. This system offers a unique valved muffler, controlled by an included kit with two key fob controllers, allowing drivers to switch between a discreet, low tone and an aggressive, open exhaust note with the press of a button. This dual-mode functionality addresses the desire for both a spirited sound during performance driving and a more subdued tone for daily use or when avoiding unwanted attention. Constructed from T304 stainless steel with a natural finish, the exhaust features 1.25mm wall thickness and is TIG-welded for durability and corrosion resistance. The system incorporates dual 2.0" mandrel-bent stainless steel mid-pipes with an integrated x-pipe to promote smoother exhaust flow and minimize back pressure, contributing to increased performance and a refined exhaust note. These mid-pipes then transition into a full 3" diameter valved muffler equipped with integrated tips designed to complement the rear diffuser. Installation is facilitated by T304 stainless steel 12mm barbed exhaust hangers welded in OE locations, and the kit includes flanges to mate directly with factory downpipes. The system provides a significant weight reduction of 23 lbs compared to the factory cat-back. The kit also comes with new downpipe hardware to replace potentially seized studs, along with necessary gaskets, clamps, and other installation hardware. For vehicles without a factory exhaust valve, a vacuum source will be required for the valve controller to function correctly. Please note that this exhaust system **does not fit convertible models** of the E46.