Link Engine Management
Link G4X TTLink TTX ECU
Link G4X TTLink TTX ECU
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The Link G4X TTLink TTX is a plug-in engine management system designed for VW Group PQ34 1.8T applications with electronic throttle. It installs into the factory ECU location and connects directly to the OEM wiring loom on supported vehicles.
This ECU is intended for manual transmission vehicles only and supports most factory systems while providing advanced tuning capability through the G4X platform.
Important: Manual transmission only. Electronic throttle required. This ECU is not compatible with CANJST cables. To connect to CAN devices, use CANLTW (PN 101-0211) or CANF (PN 101-0020).
Engine Control Capability
- Designed for 1.8T turbocharged engines
- Sequential fuel injection
- Digital triggering with OEM trigger patterns
- Staged injection support
Hardware and Platform
- Direct plug-in installation using factory ECU connectors
- Onboard 4 bar or 7 bar MAP sensor
- Continuous onboard barometric correction
- USB tuning connection
- 512 MB onboard data logging
Vehicle Compatibility
- VW Group PQ34 platform
- 1.8T engines only
- Electronic throttle (drive by wire)
- Manual transmission only
- Front wheel drive or Haldex based all wheel drive
- Two connector, 121 pin factory ECU header
Known compatible vehicles include Audi TT (1999–2002), VW Golf, Passat, and Beetle models using the 1.8T platform. Additional Audi, VW, SEAT, and Skoda applications may be compatible. Refer to the official documentation for the full engine code list.
Vehicles with engine codes AEB, AGU, AJH, and AJL are not compatible.
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
- Knock control with windowing
- Selectable dual fuel, ignition, and boost maps
- Gear-based fuel, ignition, and boost compensation
- QuickTune automated fuel tuning
I O Expansion
The TTLink TTX does not use a dedicated expansion connector. Additional inputs and outputs are accessed through the main ECU header.
- Pin 110 – Analogue Temperature 3
- Pin 111 – Analogue Voltage 10
- Pin 112 – Digital Input 9
- Pin 113 – Ignition Output 6
Downloads and Resources
