BMW M4 Exhaust System

The requirements of making a sweet sounding exhaust system may be overwhelming for some. For many, the exhaust system needs to growl when the throttle is open and be cultivated and refined when you take…

Mr Drees, what area are you responsible for? Rainer Drees: I am responsible for the acoustic characteristics of M automobiles. This relates to everything that the driver hears as well as everything that can be…