System diagram - intake, turbo, exhaust - 4-cyl.
| System diagram - intake, turbo, exhaust - 4-cyl. | 
| 1. | 
       Check valve
        | 
     |
| 2. | 
       Filter element
        | 
     |
| 3. | 
       Mass air flow sensor
        | 
     |
| 4. | 
       Turbocharger
        | 
     |
| 5. | 
       Charge air cooler
        | 
     |
| 6. | 
       Bypass valve
        | 
     |
| 7. | 
       Solenoid valve
        | 
     |
| 8. | 
       Throttle body
        | 
     |
| 9. | 
       Charge air absolute pressure sensor/Intake air temperature sensor
        | 
     |
| 10. | 
       Manifold absolute pressure sensor
        | 
     |
| 11. | 
       Engine
        | 
     |
| 12. | 
       Crankcase ventilation oil trap
        | 
     |
| 13. | 
       Check valves
        | 
     |
| 14. | 
       Purge valve
        | 
     |
| 15. | 
       EVAP canister
        | 
     |
| 16. | 
       Wastegate valve
        | 
     |
| 17. | 
       Charge air regulator
        | 
     |
| 18. | 
       Charge air control valve
        | 
     |
| 19. | 
       Oxygen sensor
        | 
     |
| 20. | 
       Pre-catalytic converter
        | 
     |
| 21. | 
       Main catalytic converter
        | 
     |
| 22. | 
       Front silencer
        | 
     |
| 23. | 
       Rear silencer
        | 
     |
| 24. | 
       Brake vacuum strenghtener
        | 
     |
| 25. | 
       Brake servo
        | 
     |
| 26. | 
       Check valve
        | 
     |
