Active Exhaust System (Supercharger Vehicles Only)
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
The position of the exhaust valves set by the ECM depends on engine speed, throttle angle and operating mode of the transmission. At startup the exhaust valves are always open, to enhance the exhaust sound.
When the transmission is in the manual (sequential shift) mode, the exhaust valves are permanently open. When the transmission is in the normal or sport mode, the position of the exhaust valves depends on engine speed and load, as detailed in the following table: