The exhaust system of the 2002 Mercedes-Benz S55 AMG features a PSE (Performance Sound Exhaust) system. This system utilizes an air pump to modify backpressure within the exhaust, altering the sound produced. The pump’s operational pressure is a crucial factor influencing exhaust tone and overall system performance. Insufficient pressure can lead to a muted or ineffective sound modulation, while excessive pressure can potentially damage components.
Correct pump operation is essential for the intended AMG sound experience. The ability to dynamically adjust the exhaust note contributes to the vehicle’s sporty character, providing the driver with greater control over the auditory feedback. Historically, this type of system was an innovative approach to enhancing the driving experience and marked a shift towards more driver-configurable performance features in luxury vehicles.