AEM EMS 4 Universal ECU EMS4 Engine Management 4cyl

SKU
30-6905
$626.19
Discontinued

The manufacturer has stopped production of this item. We have none left, and cannot get more. But we can help you find a comparable alternative that is available.

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Description

This is AEM's new Universal Standalone ECU designed for 4cyl engines built off of the same frame work as the popular Series2 Plug n Play EMS computers. It is a complete standalone ecu that will completely run the engine, ignition, boost control, fuel control, knock control, idle, nitrous control, and everything else. like the series2 plug n play ecu's AEM sent us a pre-release EMS4 to familiarize ourselves with before they are made public so we can offer experienced tech support to our customers once they hit the market. 

  • 4 Saturated Injector Drivers
  • 4 Coil Triggers
  • 8 General Purpose Inputs/Outputs
  • Mag or Hall cam and crank inputs
  • O2 Input
  • Knock Input
  • 8 MB Internal Data Logger
  • VSS Hall Input
  • CAN Data Stream
  • USB Comms Port
  • Utilizes AEMTuner interface software
  • System is fully enabled and unlocked - Never pay for upgrades
  • Context sensitive help eases tuning process
  • Maps can be password protected by the tuner to prevent unauthorized usage sharing
  1. The computer is Universal, meaning it can run any 4cyl engine including a car engine or a motorcycle engine, or a snow mobile, or a wave runner, jet ski, etc.

  2. Since its universal, you will need to wire it into your harness. You have 2 options here:

    a.) There is a "plug n pin" harness that comes with a connector and pins. You can either cut your factory ecu connector off and pin your factory harness wires into this connector. Or you can buy an ecu extension jumper harness that normally goes between your factory harness connector and your factory ecu, and just cut the ecu connector off and pin the jumper harness wires into the AEM connector, allowing you to remove the entire system easily if you want to go back to stock ecu. (this way doesnt molest your stock harness)

    b.) There is also a 96" Long Universal Full Wiring Harness complete with Fuse Block and Main Relay if you want to do a complete custom install that will totally replace your factory engine harness. This could be good for you guys who want to do a wire tuck, or maybe your factory harness is just in poor condition and you want to start fresh...


  3. This ecu is based off the same framework as the popular AEM Series2 Plug n Play ECU's so it uses the same AEM Tuner software (and the newest version is very easy to work with)
    This ECU controls 4 Ignition Outputs and 4 Fuel Outputs, so it can only run a 4 cylinder, but it also has User Configurable PWM Outputs that can be used for:

  4. Boost Control
    Knock Control
    Idle Control
    Nitrous Control (Also works with Water/Meth Injection)

  5. It has 8 User configurable inputs or outputs

  6. It recognizes both MAG and HALL cam and crank sensors so you wont have any problems using one of these on these cars.

  7. It has 8mb of Internal Logging so you can data log internally without having a laptop hooked up, and review it later on your computer.

  8. The case of the EMS4 is small, lightweight, compact, weatherproof, etc. 



YOUTUBE REVIEW VIDEO


IMPORTANT NOTE: ECU NEEDS A HARNESS (NOT INCLUDED)



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.

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 & 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 (part # 30-2840).

 

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

 


WARNING!
AEM’s EMS-4 Universal Programmable Engine Management System is legal in California only for racing vehicles which may never be used upon a highway.

Use this system with EXTREME caution! The AEM EMS System allows for total flexibility in engine tuning, however misuse of this product can lead to major engine/vehicle damage. If you are not well versed in engine dynamics and the tuning of management systems or are not PC literate, please do not attempt installation/tuning of this product. For technical assistance, please visit forum or visit our dealer locator for a Factory Trained tuner near you. AEM holds no responsibility for any engine damage that results from the misuse of this product!

Specifications

More Information
Shipping Weight (Dimensional) 0.720000
Clearance Sale No
Availability Discontinued
Part Type Engine Management Systems
Make Universal
Model Universal
Engine Universal
Brand AEM Electronics
Carb Legal No
Product Flags sale

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