Link ECU G4X MR2Link V1 TST185X PlugIn ECU fits the Toyota MR2 V1 & Celica ST185

Link G4X Toyota TST185X Plug-In ECU – MR2 SW20 Rev1 / Celica ST185

The Link G4X Toyota TST185X Plug-In ECU gives you modern standalone engine management while retaining the convenience of a genuine plug-in ECU.

Designed for the Toyota SW20 MR2 Rev1 and Toyota Celica ST185 with 3S-GE or 3S-GTE engines, the TST185X fits directly into the factory ECU location using the original mounting points, wiring loom and ECU connectors.

No replacement engine loom or adaptor harness is required. The ECU is designed to work with the factory wiring while retaining supported original vehicle functions and maintaining a clean, factory-style installation.

A startup map is included to help get the engine running ready for final setup and calibration.

The TST185X uses the same processor, firmware and PCLink software as the rest of the Link G4X range and includes the standard G4X feature set.

Suitable Applications

The TST185X is designed to suit the following applications:

• Toyota MR2 SW20 Rev1 with 3S-GE engine – 1989 to 1992

• Toyota MR2 SW20 Rev1 with 3S-GTE engine – 1989 to 1992

• Toyota Celica ST185 with 3S-GE engine

• Toyota Celica ST185 with 3S-GTE engine

Important Fitment Note

The Celica GT-Four RC / Carlos Sainz Special Edition uses the TST205X Plug-In ECU 

Important Compatibility Information

Please check your original ECU connector arrangement against the ECU header shown in the product photos before ordering.

• Suitable for manual transmissions only

• Link Air Temperature Sensor is highly recommended

• Most factory features are supported

• E-Throttle requires ECU modification before it can be used

G4X TST185X Features

• Dual CAN Bus

• Flex Fuel

• Trigger Oscilloscope

• 3 Axis Accelerometer

• Selectable Temperature Input Pull-ups

• Flexible Engine Protection Limiters

• CAN Keypad Control

• VVT Control

• Open Loop Boost Control

• Closed Loop Boost Control

• Dual Closed Loop Lambda

• Compatible with leading aftermarket displays via CAN or serial stream

• 512MB Internal Data Logging

E-Throttle Control

The TST185X supports E-Throttle control, but the ECU requires a modification before E-Throttle can be used.

IAT Sensor

A Link Air Temperature Sensor is highly recommended when using the TST185X.

Motorsport Features

• Nitrous Control

• Launch Control

• Anti-Lag

• Cruise Control

• Traction Control

• Race Timer and Power Management

• Gear Shift Control

• Paddle Shift Control

Inputs and Outputs

For the complete list of available inputs and outputs, please refer to the Link TST185X Installation Manual.

Communications

• 2 CAN Bus Channels

• LTW 6-Pin USB Tuning Connection

Dimensions

Length: 190mm
Width: 160mm
Height: 30mm

Weight

260g

Electrical Specification

Operating Voltage Range: 6.5V to 24V
Maximum Input Voltage: 36V
Maximum Continuous Current Draw: 500mA

What's Included

• Link G4X Toyota TST185X Plug-In ECU

• Anti-static strap

• USB tuning cable

• Link stickers

• Plug-In manual card

• Product registration card

Please Note

The ECU is supplied with a startup map to assist with initial setup. This is not a finished vehicle calibration.

Professional setup and tuning are recommended before the vehicle is driven under load.