Skunk2 Honda B/D/H/F - Series 4 Bar MAP SensorA 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.; This Part Fits: Year Make Model Submodel 1990 1993,1997 2001 Acura Integra GS 1992 2001 Acura Integra GS R 1986 2001 Acura Integra LS 1987 1988 Acura Integra LS Special Edition 1986 1998 Acura