The manifold absolute pressure sensor (MAP sensor) is one of the sensors used in your N55 engine's electronic control system. The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit (ECU/DME). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion, efficiency, and ignition timing.
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If you are experiencing a rough idle, misfire, or check engine light, this could be the problem. Earlier fuel injectors for the have been a common failure item, this is the most up to date injector for the N63 and S63 engine.
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