Haltech - GM MAP Sensor (HGMS021255)
Available: In stock
On all products!
60 days return policy
A Haltech MAP sensor (manifold absolute pressure) provides instantaneous pressure information to the electronic control unit (ECU) from the intake manifold – the amount of boost or vacuum in the intake manifold. This is necessary to calculate air density and determine the engine’s air mass flow rate or in other words engine load. Engine load is used as a reference for all base fuel and ignition maps.