67
N55 Engine
Exhaust System
With the single twin scroll turbocharger, the design of the exhaust system is less compli-
cated than that of the N54 engine, with two turbochargers. In addition to a “near-engine”
catalytic converter design, the exhaust system also features a center silencer
and two rear silencers.
N55, exhaust system F07
Note: Due to the high efficiency of the “near engine” three way catalytic
converter, no additional catalytic converters are necessary.
Index Explanation
1
Exhaust manifold
2
Exhaust turbocharger
3
Catalytic converter
4
Center silencer
5
Rear silencer, right
6
Rear silencer, left
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