What is a Porsche Active Suspension Management System?
Since 2005, Porsche has been installing Posce Active Suspension Management (PASM) system in their cars. What this system does is provide improved grip and greater comfort while you drive your Porsche vehicle. What makes this system so unique from a standard damper is that it does not have a control wire that is connected to the head of the unit. What the PASM has is a central control unit that is connected to all four dampers that send out an army of sensors that spring into action at the push of a button.
What these sensors do is they measure parameters such as steering input, body roll, and suspension bump while you drive your Porsche vehicle. This data is sent back to the control unit, where the PASM system determines whether to stay in normal or sport mode.
In normal mode, the valves controlling the channel are open, which allows for a greater flow of oil, resulting in a softer damper.
In sport mode, the dampers stiffen as the bypass channel is closed. This allows for greater cornering performance by maintaining the tires’ contact with the road. By closing the bypass channel, there is an increase in the compression needed to force the oil through the damper body. Creating a stiffer damper and a more responsive Porsche vehicle.