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Return to Parts List Category : B- Small Block Dodge Magnum : Computers, Programmers & Sensors MSD 23131 MAP SENSORS BOSCH STYLE 3 BAR 44 PSI FOR MSD CONTROLS & UP TO 30# BOOST $143.95 Bosch Style 3 Bar 44 Psi For MSD Controls & Up To 30# Boost   MAP Sensor, 3-Bar  For blown or turbo applications up to 30 lbs of boost  Compact Model   The pressure inside the intake manifold is an extremely important input to the ECU. This Sensor will respond to changes in manifold pressures and relay the information to the ECU in the form of a voltage signal ranging from about 1 volt to 5 volts. Several different versions are available for normal aspirated and engines with blowers.