2.5 Manifold Absolute Pressure (MAP)
Forced induction engines need a MAP sensor to give the ECU a reading of manifold pressure (boost
pressure). In some cases a MAP sensor is used to measure engine load on NA engines but this is rare.
MAP sensor ratings are absolute rather than boost pressure so 1bar is for normally aspirated (NA)
non-boosted engines, 2bar for up to 1bar boost, 2.5bar for up to 1.5bar boost, and 3bar for up to 2bar
boost.
The MAP sensor will be joined to the inlet plenum by a small diameter tube.
It is not possible to find which wiring terminal has which function externally so this information must
come from the manufacturer of the component.
OMEM200 Installation Manual 2v10
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