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KO Racing Gen5 3SGTE Adapter with Link Plug-in ECU
KORacing Products » Toyota MR2 MK2 » Electronics & Tuning

Finally a fully integrated Plug In EMS option for ST246 3sgte Engines. Link does not themselves currently make a plug-in ecu for the Caldina Gen4 3SGTE engine, so that typically leaves the option of adapting one of their wire in ecus, or adapting a plug in ecu from a different application to the Gen 5 wiring and pinout. What KO Racing has done is design a board that allows the control/logic board from a Link Plug-in ecu to be put directly inside of a GEN 5 3SGTE ecu case similar to Link’s other plug-in ecu options.

Beyond being a basic pinout and connector interface to allow the option to "plug and play" with the Link ecu, we have gone a step further by integrating the necessary design features to allow to optionally add an on-board 4 bar map sensor and on-board wideband with ecu programmable on/off control. Using these options can cut down on installation time dramatically. Installation can become virtually as simple as running a wideband sensor and cable to the ecu, and running a vaccum line to the ecu from the intake manifold. Plug in your USB cable, plug in the ecu into the car and start tuning.


  • Fully compatible with Link G4+ and G4x plug in ecu controllers
  • Has 2 CAN bus connectors, and 2 expansion connectors on board
  • 4 bar on board map sensor for up to 43.5psi boost or you can use the OEM map sensor - just disable whichever input you don't want to use (approximately 2.5 bar for the OEM sensor or good to 20psi boost)
  • Spartan LSU4.9 On board Wideband (optional)
  • Directly bolts into the 3SGTE Caldina 5th Generation engine control unit case - modifications/drilling/trimming required to run wires and hose out from inside the case

    NOTE: Price includes a Link Plug In ecu control board installed onto the KO Racing Adapter with a KO Racing base calibration. The base calibration is intended only to get the vehicle started and running. Tuning by an experienced tuner will be required or possible serious engine damage could occur.

    NOTE: This product is intended for tuning manual transmission vehicles and includes no provisions for automatic transmission control. It is intended primarily for vehicles that have swapped in the ST246 Caldina 3SGTE engine or ST246 Caldina ecu and engine control wiring. This ecu does not have Automatic transmission control and is only for manual transmission vehicles without ECU based transmission control.

    LINK G4X Plugin has the following Features:
    (Click Here for full specifications.)

    • Configurable for 2-Stroke, 4 Stroke and Rotary Engines
    • Configurable Firing Order
    • 6 x High Current Injector Drives (suits high impedance injectors)
    • 8 x Ignition Channels
    • 8 x Auxiliary Outputs (All PWM capable). Aux5-8 can control Stepper Motors and drive High or Low
    • 11 Digital Inputs (All capable of reading frequencies up to 10kHz)
    • 4 Temperature Inputs (Configurable pull-ups on ANT1&2)
    • 12 x 0-5V Analog Inputs
    • 2 x Trigger Inputs (Reluctor, Optical or Hall Sensors)
    • On Board Baro
    • Traditional, Modelled and Modelled Multi-Fuel Equations
    • Quick tune (automated fuel tuning)
    • Up to 440 Zone Fuel Table with configurable load and RPM centers. Configurable X and Y Axis Parameters
    • AFR Table Correction
    • Individual Cylinder Fuel Trims
    • Idle ignition control
    • User Configurable RPM Limits based on external input
    • MAP Limit with dual tables
    • Selectable fuel or ignition limiting
    • Each Output independently configurable
    • Unused ignition and Fuel outputs available as auxiliary outputs
    • Ethanol Sensor Control
    • Wheel Speed Detection on all digital inputs with additional general-purpose speed inputs
    • General Purpose switches, speeds, rpms and frequencies
    • large variety of input types
    • Built in 3 axis accelerometer
    • Large number of built in calibrations as well as user configurable calibrations
    • Supports nearly all OEM trigger patterns and custom trigger arrangements
    • Anti Lag
    • Launch control
    • Solenoid, Stepper or EThrottle Control Idle control
    • Open or Closed loop actuator control and Closed loop Ignition control available
    • Has an internal EThrottle Controller and supports external controllers
    • Open or Closed Loop Boost Control
    • Boost control by Gear, coolant temperature, intake air temperature, etc.
    • Built in Knock input and control for ignition and fuel on a per cylinder basis.
    • Variable Valve Timing Control closed loop control for many OEM applications, or PID control for advanced tuners
    • AC Control - Basic and Advanced modes available
    • 512 Megabytes of Datalogging
    • Up to 250 ECU Logging channels
    • Up to 1kHz per channel with a maximum total sample rate of 100kSamples/s when using ECU Logging
    • Unlimited channels when using PCLink logging
    • Tuning Port USB on board
    • Two CAN buses
    • 150 MHz Specialised Engine Management Microprocessor
    • Ignition control to 0.1 degree, fuel to 0.01 ms
    • 32 Bit Floating Point Calculation
    • 12 Bit ADC Resolution
    • 20000+ RPM
    • 4Gb Non Volatile Flash
    • Internal Temperature Range -10 - 85oC
    • Ambient Temperature Range -30 - 90oC
    • Operating Voltage 8 - 22V Operating Current 200mA
    • Electrical protection on all inputs and outputs
    • Onboard Barometric Pressure Sensor
      Typical Packaging Contents
    • G4X PlugInX ECU
    • Wiring and Installation Instructions
    • 2 large Link Stickers
    • 2 small Link Stickers
    • Manufacturing Standard – ISO 13485
    NOTE: Does not include ecu case. This is made to bolt into the OEM ecu case. You will need to modify an OEM ecu case to pass wires and vacuum hose through for the USB cable as well as any expansion options.
    $1195.00 each
    Add Wideband on-board:
    Add Expansion harness:

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