2002-2004 Acura RSX Link Ecu G4X
Link ECU G4X Honda and Acura PlugIn ECU — 237-4000
Upgrade your compatible Honda or Acura with the Link ECU G4X PlugIn ECU. This advanced standalone engine-management system installs inside the factory ECU enclosure and connects to the original wiring loom, giving you complete tuning control without installing a universal harness.
Designed primarily for K20A-series applications, this ECU provides precise control over fuel, ignition, VTEC, variable cam timing, boost and data logging. It supports naturally aspirated, supercharged and turbocharged engine combinations.
FREE Link ECU USB Tuning Cable — $70 Value
Every Link ECU purchased from Kugan Tuning includes a compatible Link ECU USB tuning cable at no additional cost. Connect your laptop directly to the ECU for configuration, diagnostics, data logging and professional tuning.
Why Choose This Link G4X PlugIn ECU?
- Installs inside the factory OEM ECU enclosure
- Connects to the original engine wiring loom
- No complete standalone wiring harness required
- Supports compatible K20A, K20A2, K20A3, K24A1 and D17 applications
- Onboard 7-bar MAP sensor
- Supports most factory vehicle features
- Four-pin powered CAN connection
- Advanced VTEC and variable camshaft control
- 512 MB of onboard data-logging memory
- Expandable inputs and outputs
- FREE Link ECU USB tuning cable included—a $70 value
- FREE remote setup support included—a $297 value
Suitable Applications
Acura RSX and Honda Integra
- 2002–2004 Acura RSX with K20A, K20A2 or K20A3 engine
- 2002–2004 Honda Integra Type R DC5 with K20A, K20A2 or K20A3 engine
Honda Civic
- 2001–2005 Honda Civic Type R EP3 with K20A engine
- 2001–2005 Honda Civic Si or SiR with K20A3 engine
- 2001–2005 Honda Civic DX, LX or HX with D17A1, D17A2 or D17A3 engine
Honda CR-V
- 2002–2004 Honda CR-V with K24A1 engine
Important Compatibility Information
- Compatible with manual-transmission vehicles only
- Compare your factory ECU connector with the connector shown in the product photos before ordering
- Compatibility depends on the vehicle’s ECU connector and pinout—not only its model year and engine
- Some vehicles or engine swaps may require additional wiring and configuration
- Most factory vehicle features are supported, but support can vary by model and application
- Professional installation and calibration are strongly recommended
Powered CAN Connection
This PlugIn ECU uses Link ECU’s newer four-pin powered CAN connector and cannot use the older CANPCB cable.
Use the Link ECU CANJST4 cable, part number 101-0198, to connect compatible CAN devices. This connection provides:
- CAN communication
- Protected 12-volt power supply
- Ground connection
- Self-resetting fuse rated for 3 amps of continuous current
The CANJST4 cable is sold separately unless specifically selected or included with your order.
G4X Engine-Management Features
- Up to 6D fuel and ignition mapping
- Sequential fuel injection
- Digital triggering with support for OEM trigger patterns
- Precision closed-loop camshaft control
- OEM idle-control hardware support
- 5D boost control with three switchable tables
- Boost control based on gear, vehicle speed or throttle position
- Launch control
- Anti-lag
- Flat-shift control
- QuickTune automated fuel tuning
- Individual-cylinder correction
- Gear-based fuel, ignition and boost compensation
- Real-time selectable fuel, ignition and boost maps
- Continuous onboard barometric correction
- Staged injection
- Knock control with configurable knock windows
- Hall-effect, variable-reluctance and optical trigger-sensor support
- CAN communication
- Onboard statistics recording
- 512 MB of onboard data-logging memory
What’s Included
- Link ECU G4X Honda and Acura PlugIn ECU
- Onboard 7-bar MAP sensor
- FREE Link ECU USB tuning cable—a $70 value
- FREE remote setup support—a $297 value
FREE Remote Setup Support — $297 Value
Purchase your Link ECU from Kugan Tuning and receive remote setup support to help prepare the ECU for startup and professional tuning.
Support includes:
- Remote ECU connection and setup assistance
- Basemap selection guidance
- Startup configuration review
- Sensor and input verification
- Professional setup support
This service helps identify configuration and sensor issues before road or dyno tuning, potentially saving troubleshooting time and avoiding preventable problems.
Custom remote tuning and dyno tuning are not included unless separately purchased. Successful startup and operation depend on proper installation, wiring, mechanical condition and ECU configuration.