AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 117)

Page 117 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
We find it easiest to work with the accepted standard of kilopascals (kpa) of absolute pressure.
It is important to know the relationships of the various nomenclatures
of pressure. The units of
pressure in use today are;
1 bar (b) = 100 kilopascals (kpa) = 14.5 psi = 29.529” Hg.
1 atm. = 101.325 kpa = 14.7 psi = 29.92” Hg = 1.01325 b