Also available will be a new stainless steel sports exhaust with the option for an electronically controlled valve that can be opened for a sportier tone. (evo.co.uk)
The stainless steel sport exhaust system with actively controlled butterfly valves allows to choose a subtle «coming home» mode or a «sport» mode by pressing a button on the steering wheel. (mercedesblog.com)
The gains come courtesy of an optimised turbo, a tweaked intake system, modified fuel pump and a high - grade steel sports exhaust system. (evo.co.uk)