Skunk2 4 BAR MAP Sensor - Honda B/D/F/H Series - 352-05-1510Skunk2 is proud to offer our very own 4 BAR MAP Sensor for the B16 B17 B18 B20 D15 D16 H22 H23 F20 F22 and F23. 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. For Reference: 1 BAR is for a normally aspirated engine 2 BAR will handle a forced