ECUMASTER GDI Driver – Advanced Gasoline Direct-Injection Controller

GDI Driver – Advanced Gasoline Direct-Injection Controller

The GDI Driver is a high-performance aftermarket controller designed to interface with modern gasoline direct-injection (GDI) systems. Built for professional motorsport and advanced engine development, it enables precise management of injectors, fuel pumps, and sensors, ensuring stable operation under demanding conditions.

Core Capabilities

Injector Control

• Supports up to 8 peak-and-hold GDI injectors.

• Internal DC/DC boost converter steps supply from 12 V to up to 70 V, enabling extremely fast injector opening times and consistent spray characteristics.

• Advanced current regulation for both peak (fast opening) and hold (steady operation) phases.

• Designed for high dynamic range injectors, ensuring precise fuel metering at both low and high engine loads.

High-Pressure Fuel Pump (HPFP) Control

• Supports up to 2 independent HPFP control valves (12 V, low-side drive).

• Fully synchronized with injector events to maintain consistent rail pressure across all operating conditions.

• Capable of managing dual-pump setups for high-output engines.

Sensor Integration

• Native support for up to 4 SENT (Single Edge Nibble Transmission) sensors, commonly used for pressure and temperature measurement in modern GDI systems.

• Compatible with PWM and analog signal inputs for auxiliary sensors.

Communication & Diagnostics

• CAN 2.0B interface for seamless ECU integration, real-time data streaming, and logging.

• Provides feedback on injector duty cycle, pump operation, and sensor data.

• Diagnostic functions include overcurrent protection, thermal protection, and fault reporting.

System Optimization

While the GDI Driver can interface with any ECU featuring a GDI control strategy, it is specifically optimized for EMU PRO ECUs. Together, they form a tightly integrated system that leverages:

• Advanced injection timing algorithms for multi-pulse injection control.

• Closed-loop rail pressure regulation for stable combustion under transient loads.

• Predictive injector modeling, reducing latency and improving repeatability.

Base Maps & Engine Support

To simplify calibration, pre-configured base maps are included for popular engines:

• Volkswagen/Audi EA888 Gen 3 (2.0 TSI)

• Ford 1.5L Dragon GTDI

These maps are validated for use with both the EMU PRO and GDI Driver, ensuring a reliable starting point for tuning. Additional engine support will be added in future software releases.

Technical Specifications

• Injector Outputs: 8 channels, peak-and-hold, up to 70 V drive

• Ignition Outputs: 0

• Pump Valve Outputs: 2 channels, low-side, 12 V

• Supported Injectors: Electromagnetic, low-impedance

• Sensor Inputs: 4 SENT + auxiliary analog/PWM

• RPM Limit: 9000 RPM (at full capacity: 8 injectors + 2 pumps)

• Operating Voltage: 9 – 16 V

• Communication:

  • CAN buses: 1 × CAN 2.0 A/B

  • Bitrate options: 1 Mbps (default), 500 kbps, 250 kbps, 125 kbps

  • CAN termination: None

  • PC communication: via USB-to-CAN (Ecumaster USBtoCAN, Peak, Kvaser)

• Protection: Overcurrent, short-circuit, thermal shutdown

• • Dimensions: 151 x 85 x 38 mm

  • Weight: 450 g