Link ECU | G4X CIVICLink | K20X | Plug - In

Link ECU 237-4000

( 237-4000 )


Used for: Tuning the K20A engine commonly found in the Type R Honda Civic.

  Add to basket
We offer:
We offer payment cardsWe offer PayPal

Link Engine Management Logo | LINK ECUS IN ESSEX

Link ECU | "G4X CIVICLink K20X"

  • Designed for: 2001 - 2005 Honda Civic Type R K20A Engine.
    Full list of suitable applications below.
  • The G4X CIVICLink K20X is a Plug-In ECU developed by Link Engine Management, designed to maximise the potential of your car.
  • Link's Honda Civic ECU fits directly into the factory enclosure, requires no alteration of the factory wiring loom / harness [for models listed], and is designed to be simple to install.
  • This ECU works for manual transmissions only.
  • On-Board 7 Bar MAP Sensor.
  • CIVICLink K20X Supports the following vehicles: 

    Honda Integra Type R DC5 2002-2004 with K20A/K20A2/K20A3 Engine | Acura RSX 2002-2004 with K20A/K20A2/K20A3 Engine | Honda Civic Type R EP3 2001-2005 with K20A Engine | Honda Civic Si/SiR 2001-2005 with K20A3 | Honda Civic DX/LX/HX 2001-2005 with D17A1/A2/A3 Engine | Honda CR-V 2002-2004 with K24A1 Engine

  • Note: This Plug-in features a new 4 pin powered CAN connector and cannot use the old CANPCB cable for CAN connection.  Use the CANJST4 (Code 101-0198) cable for connecting CAN devices.  This new 4 pin port and cable provide not only the CAN connection, but also a protected 12V power supply and ground for powering the CAN devices.  The power supply is protected by a self-resetting fuse rated at 3A continuous. 

Features | "G4X CIVICLink K20"

Expansion Connector 

  • Ground (Signal)
  • +5V Out
  • AUX9 | Auxiliary Output [0.5A Current Maximum]
  • AUX10 | Auxiliary Output [0.5A Current Maximum]
  • An Volt 4 | Analog 0-5V Input
  • An Volt 5 | Analog 0-5V Input
  • An Volt 6 | Analog 0-5V Input 
  • An Volt 3 | Analog 0-5V Input 
  • An Temp 4 | Temperature Sensor Input
  • An Temp 3 | Temperature Sensor Input
  • DI9 | Digital Input
  • DI8 | Digital Input
  • DI7 | Digital Input
  • DI6 | Digital Input
  • AUX7 | Auxiliary Output [0.5A Current Maximum]
  • AUX6 | Auxiliary Output [0.5A Current Maximum]

G4X Plug-In Features:

  • Up to 6D Fuel & Ignition Mapping
  • Precision Closed Loop Cam Control (Four Cam | Independent Control)
  • Sequential Fuel Delivery
  • Digital Triggering, all OEM Patterns
  • 5D Boost Control w/ Three (3) Switchable Tables
  • OEM Idle Hardware Supported
  • Motorsport features; Anti-Lag, Launch Control, Flat Shift
  • Continuous Barometric Correction [on board]
  • CAN Port
  • QuickTune - Automated Fuel Tuning
  • Individual Cylinder Correction
  • USB Tuning Cable included
  • Records into On-Board memory
  • Gear Compensations for Spark, Boost and Fuel
  • More...

Full Specification [Link ECU] 

Link ECU Supply, Installation & Calibration:

  • Redline Tuning can supply, install & calibrate both the Link G4X CIVICLink K20X ECU or any other Link Engine Management Product currently available in Essex, London and the South East of England.

Contact Redline Tuning 

Important Notes:

  • Please double check / cross reference your existing ECU's pinout with the images we have provided, to ensure connections are correct.

redline tuning logo

  • Please note that we do not carry stock for all Link Engine Management products. If we do not have an item in stock it will be ordered for you, please allow up to 2 extra business days for us to process your order. If you need an item urgently, or would like to know if an item is in stock, please contact us here
  • Prices shown do not include VAT, this will be calculated and added at checkout for UK customers.
  • For international customers, sales tax will not be charged at checkout. You will be responsible for the VAT equivalent wherever you live. This will be charged by the courier prior to delivery. We have zero control over these charges and they vary by the destination country. We advise that you check before ordering if you are unsure.
Shopping Basket