AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 171)

Page 171 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
The User Fuel Trim table and function can be used to define
any available analog input as a fuel trim. The User Fuel
Analog In option is used to define the input. The table above
defines a -50% to +50% trim based on that input. The X-axis in
the table is 0 to 100% of the analog voltage input. This table is
sometimes used with a 0
– 5V trim pot. The driver can
manually adjust this trim any time.