A3 Mk2
| Diagram of turbocharger system, engine codes BYT, BPU |
| 1 - | Charge air cooler |
| 2 - | Throttle valve module -J338- |
| 3 - | To activated charcoal filter |
| 4 - | Activated charcoal filter solenoid valve 1 -N80- |
| 5 - | Pressure control valve |
| 6 - | Vacuum unit for charge pressure control |
| 7 - | Charge pressure control solenoid valve -N75- |
| 8 - | Turbocharger air recirculation valve -N249- |
| 9 - | Turbocharger |
| 10 - | Brake servo |
| 11 - | Non-return valve |
| 12 - | Vacuum pump |
| 13 - | Air mass meter -G70- |
| 14 - | Air cleaner |
| 15 - | Variable intake manifold change-over valve -N156- |
| 16 - | Vacuum unit for intake manifold change-over |
| 17 - | Coarse oil separator |
| 18 - | Non-return valve |
