With BMW’s move towards turbocharged engines in the entire G30 lineup, many enthusiasts have wondered if the new 5-series will live up to the greatness of previous 5-series. A turbocharged engine has potential to produce far more torque than a naturally aspirated engine, but often the sound of a smaller turbocharged engine is what turns enthusiasts away. In the case of the 540i M Sport, there is a 3.0L turbocharged inline-six engine under the hood. In stock form, you can’t really hear the engine at all, but with the addition of an Armytrix Valvetronic catback exhaust, you can crank the exhaust volume up with the press of a button.
Once the exhaust valves have been opened via the included remotes, or through the Armytrix iOS/Android app, the 540i has a very clean, deep, and throaty exhaust sound, which is very similar to the sound of the BMW M2 when equipped with an Armytrix exhaust. Of course, you are driving a large, luxury sedan, and sometimes you want the exhaust to be quiet so you can relax. With the Armytrix remote, you’re able to close the exhaust valves and make the 540i M-Sport sound similar to stock. Be sure to check out the short video below so you can get an idea of how this exhaust system sounds in the real world.