Air supply (Ver. 2): Notes

2013 Mini Cooper Countryman, Standard TransSECTION Notes
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The engine in the Alpina version  differs to the BMW AG engine in the following ways:

  • 2 exhaust turbochargers
  • 2 vacuum-actuated wastegate valves
  • 2 catalytic converters and 4 oxygen sensors in the twin-pipe exhaust system
  • 2 electrical blow-off valves
    Fig 1: Engine Air Supply Operation Diagram
    G09908037Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Electropneumatic pressure converter (for adjusting the bypass valve on the exhaust turbocharger for cylinders 4 to 6), activated by the DME
2 Electropneumatic pressure converter (for adjusting the bypass valve on the exhaust turbocharger for cylinders 1 to 3), activated by the DME
3 Engine ventilation heating
4 Intake-manifold pressure sensor
5 Intake air temperature sensor
6 Electromotive throttle actuator
7 Electrical blow-off valve
8 Intake silencer
9 Charging pressure sensor
10 Engine
11 Bypass valves (wastegate valves)
12 Charge air cooler
13 Exhaust turbocharger
14 Non-return valve with pressure limitation (for engine ventilation in the inlet ports)
15 Non-return valve to the fresh air pipe (for engine ventilation)
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
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