4 Bar GM MAP Sensor (inc plug pins) 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 engines air mass flow rate or in other words engine load. Engine load is used as a reference for all base fuel and ignition maps. 1 Bar Map Sensor:A 1 bar MAP sensor is capable of reading intake pressures below or equal to atmospheric pressure, for this reason a 1 bar MAP sensor is suitable only for naturally aspirated engines (ie not turbo or supercharged). 2 Bar Map Sensor:A 2 bar MAP sensor is capable of reading intake pressures up to 1 bar of positive pressure above atmospheric (otherwise known as boost).
This is equivalent to around 14.7psi of boost or 100kpa of positive pressure. This sensor is suitable for turbocharged or supercharged vehicles running 15psi of boost or less. We are an authorized HALTECH dealer and carry over 300 brands of performance automotive parts in our 22,000sqft facility. Powered by Solid Commerce The All-in-One Listing, Inventory & Order Management Solution. The item "HALTECH HT010106 4 Bar GM MAP Sensor inc plug & pins" is in sale since Sunday, August 09, 2015.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Motor Mounts". The seller is "parts-powerhouse" and is located in Dayton, Ohio. This item can be shipped worldwide.