Lotus S2 K4 Rover Plug-In ECU - ECUMASTER

Lotus S2 K4 Rover Plug-In ECU

This plug-in ECU solution for the Lotus S2 K4 Rover engine provides a reliable replacement for the often-failing OEM ECU, which is no longer available from Lotus.

Built on the proven Ecumaster EMU Black platform, this package delivers precise engine control, improved reliability, and integrated wideband lambda control for accurate fuel management. Designed specifically for track-oriented vehicles, it also supports additional sensor integration and CAN bus connectivity for modern data systems, displays, and expanded channel monitoring.

The ECU is supplied with a starting map, allowing it to be plugged in and started with minimal setup.

Key Features

Plug-In OEM ECU Replacement
Designed as a direct replacement solution for the Lotus S2 K4 Rover ECU, offering a reliable alternative where the original Lotus ECU is no longer available.

Built on Ecumaster EMU Black
Uses the trusted Ecumaster EMU Black platform for advanced, motorsport-capable engine management.

Wideband Lambda Control
Includes support for wideband lambda control, helping optimise fueling, drivability, and engine performance.

Track-Focused Functionality
Developed for track-oriented vehicles, with the flexibility to add sensors and expand monitoring capabilities.

CAN Bus Connectivity
Connect to modern data systems, dashboards, and displays via CAN bus, allowing access to a wider range of engine channels and parameters.

Engine Data Logging Compatibility
All engine parameters can be logged when used with the optional EDL1 logger, available separately.

Supplied with Starting Map
The ECU comes preloaded with a starting map, ready to plug in and run.

Included

• Plug-in ECU based on Ecumaster EMU Black
• Starting calibration map
• Link loom for wideband lambda sensor (if selected )

Optional Accessories

• EDL1 logger for full engine parameter logging
• LSU 4.9 wideband lambda sensor, available separately

Installation Note

Please note: Fuse number 8 must be changed from 7.5A to 10A during installation

Motorsport Use Notice

This product is intended for performance, motorsport, and off-road use. Installation and calibration should be carried out by a qualified professional. It is the customer’s responsibility to ensure the product is suitable and legal for their intended use and location.