Its place near the top of the 3 Series totem poll has been taken by the 340i, and today we are going to examine the sound made when it's fitted with an Akrapovic exhaust system. Akrapovic exhaust ...

With the previous MPPK (for the N55 engine), we went the route of more air intake, but for the 340i (B58 engine) we modified the exhaust system to reduce back pressure and allow the air to exit ...