MR2Link V1 TST185X

Description

The TST185X fits inside the factory enclosure and replaces the OEM ECU of the 3S-GTE engine in the models listed, with no alteration to the wiring loom.

G4X Plug-In ECUs replace the factory ECU and fit inside the original enclosure, with no alteration to the vehicle wiring loom. All the features of a Link G4X wire-in ECU, with a direct-fit installation.

Important notes

• Before purchasing, check that your factory ECU connector matches the header shown in the photos.
• Manual transmission only.
• An intake air temperature (IAT) sensor is highly recommended.
• Most factory features are supported.
• This ECU needs a hardware modification before E-Throttle (drive-by-wire) can be used.
• An ignition expansion (sold separately) allows conversion to a direct spark ignition system; alternatively these outputs can be used to drive auxiliary devices.

Compatible applications

• Toyota MR2 (SW20) from 1989 to 1992
• Toyota Celica ST185 (except the GT-Four RC / Carlos Sainz Special Edition, which is compatible with the TST205X)

G4X key features (where applicable)

• Up to 6D fuel and ignition mapping
• Precision closed loop cam control (four cam, independent control)
• Sequential fuel delivery
• Digital triggering, all OEM patterns
• OEM idle hardware supported
• 5D boost control with three switchable tables
• Motorsport features: antilag, launch, flat shift
• Continuous barometric correction (on board)
• CAN port
• QuickTune automated fuel tuning
• Individual cylinder correction
• USB tuning cable included
• Stats recording into on-board memory
• Gear compensations for spark, boost and fuel
• Real time selectable dual fuel, ignition and boost maps
• Sync and crank sensors can be a combination of Hall effect, variable reluctance or optical
• Boost control referenced to gear, speed or throttle position
• 512 MB data logging memory
• Staged injection
• Knock control with windowing

I/O expansion

Inputs and outputs available on the expansion connectors, as per Link documentation.

Expansion connector

Gnd	Sensor Ground Only
+5V Out	Low Current +5V Supply
DI 5	Digital Input for switching functions.
DI 6	Digital Input for switching functions.
DI 4	Digital Input for switching functions.
An Volt 4	Analog 0-5V input
An Volt 5	Analog 0-5V input
An Volt 6	Analog 0-5V input

An ignition expansion allows you to convert to a Direct Spark ignition system. Alternatively, these outputs can be used to drive auxiliary devices. The following pinout describes the available connections.  (This is not included and needs to be purchased separately.)

Ignition Expansion

1 Ignition 1

2 Ignition 2

3 Ignition 4

4 Ignition 3