EMS-4 Universal Standalone Engine Management System
OVERVIEW
AEM’s EMS-4 Universal Standalone Programmable Engine Management System is the ideal standalone Engine Management System for modified Powersports and four-cylinder race car applications. The EMS-4 was created using AEM's powerful Series 2 hardware and includes all of its advanced features without the unneeded ancillary components.
AEM’s EMS-4 Universal Standalone Programmable Engine Management System is the ideal standalone Engine Management System for modified Powersports and four-cylinder race car applications. The EMS-4 was created using AEM's powerful Series 2 hardware and includes all of its advanced features without the unneeded ancillary components.
WHY YOU WANT THIS
If you have modified your four-cylinder Powersports application beyond the factory ECU’s ability to control engine operation, or have a 4-cylinder race vehicle that does not require some of the advanced hardware features of an AEM Series 2 plug n play System , AEM’s EMS-4 provides complete engine control for the maximum power and reliability.
If you have modified your four-cylinder Powersports application beyond the factory ECU’s ability to control engine operation, or have a 4-cylinder race vehicle that does not require some of the advanced hardware features of an AEM Series 2 plug n play System , AEM’s EMS-4 provides complete engine control for the maximum power and reliability.
THE HARDWARE
AEM’s EMS-4 provides complete engine control for small engines with up to 4 cylinders. The unit includes a 36-pin connetor that is specifically designed to operate in harsh environments. It is completely sealed and weather/shock proof, allowing it to be mounted anywhere. The EMS-4 works with MAG or HALL crank inputs and can directly drive smart coils or an external ignitor such as AEM’s 4-Channel Coil Driver.
AEM’s EMS-4 provides complete engine control for small engines with up to 4 cylinders. The unit includes a 36-pin connetor that is specifically designed to operate in harsh environments. It is completely sealed and weather/shock proof, allowing it to be mounted anywhere. The EMS-4 works with MAG or HALL crank inputs and can directly drive smart coils or an external ignitor such as AEM’s 4-Channel Coil Driver.
Injector/ Coil Outputs | |
Injector Outputs (8 ohm minimum, High Impedance Only) | 4 Saturated |
Coil Triggers 0-5V Falling Edge Fire (Do not connect to coil primary) | 4 |
Timing Sensor Inputs | |
VR (Mag) Cam Input | 1 |
VR (Mag) Crank Input | 1 |
Hall VSS Input | 1 |
Hall Crank Input | 1 |
Hall Cam Input | 1 |
Inputs/Outputs | |
GPIO - 1.5A Low Side Output / 0-5V Analog Input / Switch Input | 4 |
GPIO - 1.5A Low Side Output / 0-5V Analog Input / PWM Output | 4 |
O2 Sensor Input 0-5V Analog | 1 |
Knock Sensor Input Programmable | 1 |
Throttle Position Sensor Input 0-5V | 1 |
Manifold Pressure Sensor Input 0-5V | 1 |
Coolant Temperature Sensor Input 0-5V | 1 |
Inlet Air Temperature Sensor Input 0-5V | 1 |
Sensor Ground | 1 |
5 Volt Reference | 1 |
Communication | |
USB comms | Yes |
Communication cables included | Yes |
Fully enabled editing/logging software included | Yes |
CAN bus equipped with Programmable Send / Receive | Yes |
CAN data stream output | 32 ch |
DATA Acquisition | |
Internal data logging | 8 MB |
Maximum internal logging rate (per channel) | 125 Hz |
PC logging | Yes |
Data analysis using AEMLog | Yes |
Functions and Features | |
User adjustable knock sensor center frequency | Yes |
Individual cylinder ignition trims | Yes |
Individual cylinder fuel trims | Yes |
High/Low speed fuel pump support | Yes |
All channels/maps/tuning options unlocked | Yes |
Boost control | Yes |
Groundspeed based boost target | Yes |
Nitrous injection | Yes |
Staged injection | Yes |
Ground speed limiting | Yes |
Rate of Acceleration Control | Yes |
Overrun boost enhancement (anti-lag) | Yes |
Gear change ignition cut (shift-without-lift) | Yes |
Password protected calibrations | Yes |
Fuel & Ignition rev limiters | Yes |
"In cockpit" global fuel trim capability | Yes |
Gear dependent shift light | Yes |
Evap/Purge function | Yes |
Software definable "virtual" switch inputs | Yes |
EGT Based fuel trims (additional hardware needed) | Yes |
Maximum boost limit | None |
Physical Dimensions | |
Length | 120 mm |
Width | 114 mm |
Height | 35 mm |
Finish | Black |
Reasonable Price
AEM’s EMS-4 Universal Programmable Engine Management System is RM3950 including Installation and tuning
AEM’s EMS-4 Universal Programmable Engine Management System is RM3950 including Installation and tuning
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