Ecumaster EMU Black Engine Management Unit ECU

Ecumaster EMU Black Engine Management Unit ECU

The Ecumaster EMU Black is a powerful standalone engine management unit designed for advanced control of fuel, ignition, boost, drive-by-wire throttle, VVT, auxiliary systems, CAN communication, and motorsport strategies.

Developed as a major evolution of the original EMU platform, the EMU Black features a CNC-machined aluminium enclosure, improved electronics, built-in CAN bus, wideband lambda support for Bosch LSU 4.2 and LSU 4.9 sensors, integrated drive-by-wire control, dual H-Bridge outputs, flexible trigger inputs, and enhanced software.

It is suitable for a wide range of performance, race, rally, drift, track, and engine swap applications where professional standalone ECU control is required.

Key Features

Standalone Engine Management ECU
Advanced ECU for controlling fuel, ignition, boost, auxiliary outputs, drive-by-wire throttle, VVT, and motorsport strategies.

CNC-Machined Aluminium Enclosure
Bespoke aluminium enclosure provides excellent mechanical strength, heat transfer, and water resistance.

IP65 Rated
Designed for demanding environments with IP65 protection.

Built-In CAN Bus
Integrated CAN bus support with software-selectable 120 Ohm terminator, plus separate serial communication.

Built-In Wideband Lambda Controller
Supports both Bosch LSU 4.2 and Bosch LSU 4.9 wideband oxygen sensors.

Built-In DBW Throttle Control
Can directly control electronic throttle bodies without requiring an external DBW module.

Dual High-Current H-Bridge Outputs
Two H-Bridge outputs with over 6A continuous current capability for electronic throttle, VANOS, stepper motors, and suitable solenoids.

Improved Trigger Input System
Primary trigger, CAM #1, CAM #2, and VSS inputs offer software-selectable pull-up / pull-down options, filter levels, and support for Hall or VR sensors where applicable.

Dedicated Flex Fuel Input
Separate flex fuel input for ethanol content sensors.

Advanced Ignition Output Design
Supports active and passive ignition coils, software selectable.

Improved AUX Outputs
All AUX outputs include built-in flyback circuits for precise solenoid control.

Separate 5V Sensor Supply
Dedicated 5V output regulator with two 5V output terminals for easier harness design.

Improved Harness Design Options
Three sensor ground terminals, two ECU connectors, and updated pin layout help simplify wiring.

Improved Software Navigation
Updated software structure with an additional hierarchy level for easier configuration.

Enclosure & Construction

The EMU Black uses a bespoke CNC-machined aluminium enclosure designed for high resistance to mechanical damage, good heat conduction, and improved protection in motorsport environments.

The enclosure includes an additional mounting point, a sealed USB connector for PC communication, and a MAP sensor connection tube at the front.

PCB & Electronics

The EMU Black uses a 4-layer PCB with mainly SMD components. The board and components are protected with a special coating to help guard against moisture and vibration.

The unit is assembled on a fully automated production line with optical inspection and is built to IPC-S-815A standards. Carefully selected electronic components allow operation across a wide temperature range from -40°C to +105°C.

Inputs & Outputs

Analogue Inputs

• Additional analogue inputs compared with the original EMU
• Software selectable pull-up / pull-down resistors
• CLT and IAT pull-up resistors can be disabled in software
• Allows easier sharing of temperature signals with an OEM ECU when connected in parallel

Switch Inputs

• 3 digital switch inputs
• Inputs can be used to activate strategies by switching to sensor ground

Trigger Inputs

• Primary trigger, CAM #1, CAM #2, and VSS inputs
• Software selectable pull-up / pull-down options
• Software selectable analogue filter levels
• Primary trigger supports Hall or VR sensors
• CAM inputs allow reference voltage definition in 2D tables based on RPM
• VSS input supports VR or Hall sensor type

Flex Fuel Input

• Dedicated input for flex fuel / ethanol content sensor

Ignition Outputs

• Active and passive coil support, software selectable
• Improved active coil driver circuit
• Can drive two active coils from one ignition output in suitable configurations
• Selecting active coil mode with passive coils connected does not damage the ECU

H-Bridge Outputs

• Two high-current H-Bridge outputs
• Over 6A continuous current capability
• Suitable for stepper motors, electronic throttle, VANOS, and suitable solenoids
• Low-side and high-side drive possible

AUX Outputs

• Built-in flyback circuit on all AUX outputs
• Designed for precise control of PWM-driven solenoids

Drive-by-Wire Control

The EMU Black can directly control an electronic throttle body using its built-in high-current H-Bridge outputs, so no external DBW module is required.

The drive-by-wire strategy has an improved update rate and configurable PWM frequency from 1000Hz to 8000Hz for precise throttle control. For safety, the DBW strategy runs on two separate processors, with throttle limp mode triggered in the event of malfunction.

Communication & Power

CAN Bus

• Built-in CAN bus support
• Software selectable 120 Ohm terminator
• Separate serial communication

5V Sensor Supply

• Additional dedicated 5V regulator for external sensors
• Two 5V output terminals for easier wiring

Power Scheme

• Fixed 12V input powers the device and flyback circuit
• Switched 12V input turns the ECU on and off

Sensor Grounds

• 3 separate sensor ground terminals for cleaner harness design

Connectors

The EMU Black uses two connectors:

• 24-way grey connector
• 39-way black connector

The grey connector uses the same pin layout as the regular EMU, while the black connector is changed to a 39-way layout. The pin layout is designed to make repinning from a regular EMU connector straightforward.

Contents

• 1 × Ecumaster EMU Black ECU
• 1 × Warranty card
• 1 × Pinout description
• 45 × Sicma 2.8mm terminals
• 18 × Sicma 1.5mm terminals
• 1 × Set of green fillers / empty pin sealants
• 1 × FCI 24-pin connector
• 1 × FCI 39-pin connector
• 1 × Set of resistors: 2 × 2k, 2 × 10k, 2 × 120R
• 1 × USB A-A cable
• 1 × USB-A to USB-C adapter

Suitable Applications

• Standalone ECU conversions
• Turbocharged engine builds
• Naturally aspirated engine builds
• Drive-by-wire throttle conversions
• VVT and VANOS control
• Engine swaps
• Fast road cars
• Race cars
• Rally cars
• Drift cars
• Track cars
• Kit cars
• Motorsport builds
• Custom wiring loom installations

Important Notes

• Bosch LSU 4.2 or LSU 4.9 wideband lambda sensor is not included unless selected separately
• Professional installation and mapping are strongly recommended
• Final calibration should be carried out by a qualified tuner
• Some functions may require additional sensors, wiring, connectors, or configuration
• Always check the EMU Black is suitable for your engine, trigger system, throttle type, and required functions before ordering
• CAN, DBW, trigger, and safety strategies must be configured correctly before use

Motorsport Use Notice

This product is intended for motorsport, competition, tuning, and off-road use where permitted. Please ensure the product is suitable for your intended application and complies with any relevant rules, regulations, or emissions requirements before use.