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the screen (Figure 11) to switch between the two different positions
of the valves.
Figure 11
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BMW M3 / M4
Note that the valves are by default
always in Sound mode 1 position
when the engine is started. If
the Bluetooth connection is lost/
disconnected or the Akrapovič Car
Sound Kit App is closed, the valves
remain in the last mode activated
until the vehicle's engine is switched
off. At the next engine start, the
default mode is applied.
By touching the back button, the
app disconnects from the sound re-
ceiver. The Sound Remote Control-
ler can now be used.