Seller notes

Subaru WRX STI Forester XT 4 BAR MAP SENSOR UPGRADE KIT! ABSOLUTE (PSIA) PRESSURE SENSORSClean Injection offers our new high quality stainless steel PSIa sensors in 4Bar. PSIa is referenced to absolute zero. Absolute zero is the pressure measurement when all the pressure exerted by the atmosphere has been removed. The most common use for absolute pressure sensors is reading manifold pressure. PSIa sensors are required of you wish to measure vacuum. A PSIa sensor will read about 14.5 PSI when the...

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