AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 7)

Page 7 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
Part 1
– EMS-4 Installation
EMS-4 Basic Specifications
EMS-4 Specifications
CPU Core: 16 bit / 40 MHz
Injector Drivers: 4 x Saturated (8 ohm minimum, High Impedance Only)
Coil Drivers: 4 x 0-5V Falling Edge Fire (do not connect directly to coil
primary)
GPIO Pins: 4 x 1.5A Low Side Output / 0-5V Analog Input / Switch Input
4 x 1.5A Low Side Output / 0-5V Analog Input / PWM output
O2 Sensor Input: 1 x 0-5V analog
Timing Sensor Inputs: 1 x VR (mag) Cam Input
1 x VR (mag) Crank Input
1 x Hall VSS Input
1 x Hall Crank Input
1 x Hall Cam Input
Knock Sensor Input 1x Programmable
Throttle Position Input 1 x 0-5V
Manifold Pressure Sensor 1 x 0-5V
Coolant Temperature Sensor 1 x analog
Inlet Air Temperature Sensor 1 x analog
USB 1 x EMS / PC Communication
CAN 1 x Programmable Send / Receive
Sensor Ground 1 x
5 Volt Reference 1 x
Wire Harness Options
EMS-4 with 30-2905-96 Full Harness EMS-4 with 30-2905-0 Mini Harness