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Exhaust System: Notes

Fig 1: Identifying Exhaust System
G06896857Courtesy of BMW OF NORTH AMERICA, INC.
INDEX EXPLANATION REFERENCE CHART

Index Explanation
1 Position of exhaust gas oxygen sensor (monitoring sensor) after catalytic converter
2 Catalytic converter
3 Position of exhaust gas oxygen sensor (control sensor) before catalytic converter
4 Vacuum unit for wastegate valve activation
5 Exhaust turbocharger
6 Diverter (blow-off) valve
7 Exhaust manifold