The Link TTLink TTX is a direct plug-in standalone ECU replacement for VWAG vehicles on the PQ34 platform equipped with the 1.8T turbo engine — including the Audi TT 8N, VW Golf Mk4 GTI, and related models. It replaces the factory ECU without any wiring modifications, using the vehicle's original OEM connector and loom.
Running on the G4X platform, the TTLink gives you full standalone control over the 1.8T's fueling, ignition, boost, and idle speed through PC Link software. It supports aftermarket MAP sensors, larger injectors, upgraded turbo builds, and custom ignition timing — everything the factory ECU locks you out of. 512MB of onboard data logging lets you capture detailed engine data for professional-level tuning.
- Fitment: VWAG PQ34 platform — Audi TT 8N, VW Golf Mk4, and related 1.8T models
- Installation: Direct plug-in — no adapter harness, uses factory loom
- Platform: G4X — 512MB data logging, faster processing
- Software: PC Link (free download)
Genuine Link ECU product available from YPG Motorsport with worldwide shipping.