Nissan RB20 / RB25 / RB26 & SR20 76-Pin Ecumaster EMU Black ECU & Plug-and-Play Adaptor

Nissan RB20 / RB25 / RB26 & SR20 76-Pin  Ecumaster EMU Black ECU & Plug-and-Play Adaptor

The Nissan RB20 / RB25 / RB26 & SR20 76-Pin Ecumaster EMU Black ECU & Pre-Built Plug-and-Play Adaptor Kit is designed to give compatible Nissan RB engine applications the benefits of standalone engine management without the usual wiring work associated with a full standalone ECU installation.

This kit includes an Ecumaster EMU Black ECU and a pre-built, ready-to-fit plug-and-play adaptor, allowing the Ecumaster ECU to connect to the compatible factory Nissan 76-pin engine loom.

The adaptor is designed for Nissan RB20, RB25, and RB26 applications using the compatible 76-pin ECU connector. It allows complete control and use of the Ecumaster EMU Black while keeping installation cleaner and more straightforward.

It is also compatible with the MFD on R34 GT-R models, helping retain important factory display functionality where correctly configured.

Key Features

Designed for Nissan RB Engines
Suitable for compatible Nissan RB20, RB25, and RB26 engine applications using a 76-pin ECU connector.

76-Pin Plug-and-Play Adaptor
Designed to connect the factory Nissan 76-pin loom to the Ecumaster EMU Black ECU.

Ecumaster EMU Black ECU Included
Supplied with the Ecumaster EMU Black standalone ECU for advanced programmable engine management control.

Pre-Built Plug-and-Play Adaptor Included
Supplied as a complete, ready-to-fit adaptor, not loose connectors and wires.

Uses the Factory Engine Loom
Allows the Ecumaster ECU to connect to the compatible factory Nissan engine wiring loom, reducing the need for a full custom rewire.

R34 GT-R MFD Compatibility
Compatible with the MFD on R34 GT-R models where correctly installed and configured.

Standalone ECU Control Without the Wiring Hassle
A clean plug-in solution for customers wanting more control, tuning flexibility, and motorsport functionality from their RB engine setup.

Optional Bosch LSU 4.9 Lambda Upgrade
A Bosch LSU 4.9 wideband lambda sensor and matching connector can be added as an optional extra if required.

Ecumaster EMU Black Specification

The Ecumaster EMU Black is a powerful standalone engine management system designed to control advanced fuel, ignition, boost, and auxiliary strategies on a wide range of engines.

Key EMU Black features include:

• Built-in 4 bar MAP sensor
• Built-in wideband lambda controller
• Bosch LSU 4.2 and LSU 4.9 wideband sensor support
• Drive-by-wire throttle control support
• Flex fuel support
• CAN bus communication
• Advanced boost control strategies
• Launch control
• Flat shift
• Traction control strategies
• Motorsport data logging
• Knock control support
• Configurable inputs and outputs
• Closed-loop fuel control
• Closed-loop boost control
• Support for staged injection and advanced ignition strategies
• Windows-based tuning software

Optional Lambda Upgrade

An optional Bosch LSU 4.9 wideband lambda sensor and matching connector can be added to this kit if required.

Adding the lambda option allows the Ecumaster EMU Black to use wideband lambda feedback for accurate air/fuel ratio monitoring and closed-loop fuel control, making it a useful upgrade for tuned Nissan RB builds.

Kit Includes

• 1 × Ecumaster EMU Black standalone ECU
• 1 × Nissan RB20 / RB25 / RB26 76-pin pre-built plug-and-play adaptor

Optional Extras

• Bosch LSU 4.9 wideband lambda sensor
• Matching lambda connector
• Additional sensors or wiring by request

Suitable Applications

• Nissan RB20 engine applications with 76-pin ECU connector
• Nissan RB25 engine applications with 76-pin ECU connector
• Nissan RB26 engine applications with 76-pin ECU connector
• Nissan Skyline RB standalone ECU conversions
• Nissan R34 GT-R applications requiring MFD compatibility
• Turbocharged RB builds
• Fast road cars
• Drift cars
• Track cars
• Motorsport builds
• Engine swaps using compatible Nissan RB 76-pin looms

Important Notes

• Please confirm your vehicle, engine type, and ECU connector before ordering
• This listing is for the Ecumaster EMU Black ECU and 76-pin adaptor kit
• Supplied with a pre-built, ready-to-fit plug-and-play adaptor, not loose connectors and wires
• R34 GT-R MFD compatibility depends on correct installation and configuration
• Bosch LSU 4.9 wideband lambda sensor and connector are optional extras and are not included unless selected
• Professional installation and mapping are strongly recommended
• A base map may require adjustment before use
• Final calibration should be carried out by a qualified mapper
• Some factory functions depend on vehicle specification, wiring, and final ECU configuration
• Some features may require additional wiring, sensors, or modules

Lead Time Note

Please note there may be a 5–7 working day lead time if the adaptor needs to be built to order. We will confirm availability and build status after purchase where required.

Motorsport Use Notice

This product is intended for motorsport, competition, 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.