AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 175)

Page 175 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
Fuel Trim Channels
Fuel Map – The raw commanded pulsewidth value directly from the main fuel map
Throttle Mod – The trim % taken from the Throttle Fuel Trim table
Fuel Trim AIT – The trim % taken from the Air Temp Fuel Trim table
Fuel Trim Baro – The trim % taken from the Baro Fuel Trim table
Fuel Trim Boost – The trim % taken from the Boost Fuel Trim table
Fuel Trim Coolant
– The trim % taken from the Warm Up Enrichment table
Fuel Trim Gear – The trim % taken from the Gear Fuel Trim table
Fuel Trim Idle – The trim % taken from the Fuel vs Idle RPM table
User Fuel Trim – The trim % taken from the User Fuel Trim table
Fuel Pulse
– The calculated fuel injection pulsewidth including all above trims
Fuel Trim Bat-Pri – The calculated fuel injection pulsewidth after the Battery Off Primary table
trim is applied