3 Bar Map Sensor. Calibration is linear with 1.1 kpa at 0 volts and 315.5 kpa at 5 volts. This sensor is intended to be used on engines producing positive manifold pressure up to 2 bar, or roughly 30psi of boost.

However, it offers an expanded operating range compared to the original (2.5 bar) sensor that is on many of our tdi's from the factory. This sensor is intended to be used on engines producing positive manifold pressure up to 2 bar, or roughly 30psi of boost. 3 bar map sensor manifold absolute pressure (map) sensors, have two specific responsibilities in the engine management system:

Map sensor gm 3 bar (manifold absolute pressure sensor), standard, compatible with the ms3pro and all flavors of the megasquirt ems / microsquirt ems.map sensor assembled in the usa, unlike the current delphi production.

3 bar map sensor manifold absolute pressure (map) sensors, have two specific responsibilities in the engine management system: Measuring barometric pressure at key on, and to report engine load to the powertrain control module. This sensor is an absolute must for forced induction setups utilizing higher boost levels than the oem map sensor is rated for and offers a 3 bar absolute pressure reading capacity. That means it measure from a full vacuum to 2.50 bars (i.e., up to ~1.5 bar above normal atmospheric pressure).