AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 170)

Page 170 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
The Baro Fuel Trim table requires a barometric pressure sensor. Some plug & play EMS
systems come equipped with a baro sensor. Check pinout sheet or schematic for more
information. Alternatively, the baro sensor input can be defined as any available analog input
using the selection dropdown as shown below: