Link G4X CIVICLink K20X ECU

The Link G4X CIVICLink K20X is a plug-in engine management system designed for Honda and Acura vehicles using K-series engines. It installs into the factory ECU enclosure and connects directly to the OEM wiring loom on supported vehicles.

This ECU is intended for manual transmission vehicles only and is designed primarily for K20 engine applications.

Important: Manual transmission only. This ECU includes an onboard 7 bar MAP sensor. Please confirm your ECU connector matches the header shown in the product images before purchase.

CAN note: This ECU uses a 4 pin powered CAN connector and is not compatible with older CANPCB cables. Use the CANJST4 cable (PN 101-0198) for CAN device connection. This connector provides CAN communication along with protected 12V power and ground for CAN devices.

Engine Control Capability

• Designed for Honda K-series engines
• Sequential fuel injection
• Digital triggering with OEM trigger patterns
• Staged injection support

Hardware and Platform

• Direct plug-in installation using the factory ECU enclosure
• Onboard 7 bar MAP sensor
• Continuous onboard barometric correction
• USB tuning connection
• 512 MB onboard data logging

Vehicle Compatibility

• Honda Integra Type R DC5 (2002–2004) K20A, K20A2, K20A3
• Acura RSX (2002–2004) K20A, K20A2, K20A3
• Honda Civic Type R EP3 (2001–2005) K20A
• Honda Civic Si / SiR (2001–2005) K20A3
• Honda Civic DX / LX / HX (2001–2005) D17A engines
• Honda CR-V (2002–2004) K24A1

Key Features

• Up to 6D fuel and ignition mapping
• Boost control with multi-dimensional tables
• Launch control, anti lag, and flat shift
• Individual cylinder fuel and ignition trims
• Selectable dual fuel, ignition, and boost maps
• Gear-based fuel, ignition, and boost compensation
• QuickTune automated fuel tuning
• Knock control with windowing

Downloads and Resources

• Installation Manual (PDF)

View all Link ECU Resources