The manifold absolute pressure sensor MAP sensor is one of the sensors used in an internal combustion engine's electronic control system.
Engines that use a MAP sensor are typically fuel injected.
The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit ECU. 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 and influence the advance or retard of ignition timing. A fuel-injected engine may alternatively use a mass airflow sensor MAF sensor to detect the intake airflow. A typical naturally aspirated engine configuration employs one or the other, whereas forced induction engines typically use both; a MAF sensor on the Cold Air Intake leading to the turbo and a MAP sensor on the intake tract post-turbo before the throttle body on the intake manifold.
When upgrading a turbo or supercharger or hard tuning required the settings of the boost pressure sensor must be changed. We can offer this service to our customers.