Skunk2 2012+ Civic / 06-09 S2000 - 4 Bar MAP Sensor

A 1 BAR MAP sensor reports barometric pressure times one; which is approximately 14.7 psi or 30in/Hg (inches of mercury). 2 BAR or 3 BAR simply mean two or three times above barometric pressure. The sensor will measure each direction; vacuum or pressure.;