Unitronic Stage 4 TCU DSG Software – Audi RS3 8V DAZA 2.5 TFSI EVO (Includes Uni Connect+ Flashing Cable)
Ultimate Transmission Calibration for Extreme Power Builds
Take your Audi RS3 8V DAZA 2.5 TFSI EVO to the next level with Unitronic Stage 4 TCU Performance Software — engineered for big-turbo, high-output builds using Syvecs, DS1, or other standalone ECU solutions. This advanced calibration unleashes the full potential of the DQ500 DSG transmission, ensuring your gearbox keeps pace with extreme engine torque while delivering precise, rapid shifts under the harshest conditions.
Whether you’re pushing 800 + hp on a full-frame turbo or chasing consistent quarter-mile passes, Stage 4 TCU is the missing link between raw power and total control.
🔑 Key Features
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Developed for Full-Frame Turbo Cars: Purpose-built for DAZA-engine RS3/TTRS platforms with large turbo conversions (Iroz, Xona, Garrett, Precision, etc.) and advanced ECU tuning (Syvecs, DS1).
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Maximum Clutch Pressure and Torque Limits Raised: Substantially increased DSG clutch clamping pressure and torque limiters — essential for cars exceeding factory transmission thresholds.
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Optimised Shift Strategy for Race Applications: Fine-tuned for ultra-quick, consistent gear changes under high torque and boost, ensuring seamless power delivery on track or dragstrip.
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Launch Control and Protection Strategy Adjustments: Refined logic for improved launch consistency and reduced clutch slip during high-RPM launches.
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Built-In Reliability Safeguards: Developed with Unitronic’s world-class calibration standards to preserve DSG longevity while supporting the demands of extreme builds.
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End-User Programmable via UniCONNECT+: Flash your TCU directly through the OBD port from your home or garage — giving you full control over your transmission software.
⚙️ Compatibility / Application
| Vehicle |
Engine |
Transmission |
Notes |
| Audi RS3 8V.1 / 8V.2 |
2.5 TFSI EVO (DAZA) |
DQ500 7-Speed DSG |
Stage 4 Software |
| Audi TTRS 8S |
2.5 TFSI EVO (DAZA) |
DQ500 7-Speed DSG |
Stage 4 Software |
Not compatible with DNWA engines or standard Stage 1–3 ECU tunes. Recommended only for full-frame turbo builds with Syvecs, DS1, or equivalent standalone management systems.
📋 Product Details
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Brand: Unitronic
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Product Name: Stage 4 TCU DSG Performance Software
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Engine Compatibility: 2.5 TFSI EVO (DAZA only)
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Transmission: DQ500 7-Speed DSG
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Software Level: Stage 4 – Full-Frame Turbo Support
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Programming: UniCONNECT+ OBD Flash or Authorised Dealer
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Target Use: Track / Drag / Extreme Power Applications
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Requirement: Matching Stage 4 ECU or Standalone Tuning Required
⚠️ Important Notes
- Intended only for high-power DAZA builds exceeding Stage 3 levels.
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Not suitable for stock or Stage 1–3 setups.
- Professional installation and supporting hardware strongly recommended.
- Verify TCU Box Code and compatibility before purchase.
💬 Why Choose Unitronic Stage 4?
When your build pushes the limits of the Audi 2.5 TFSI EVO platform, your gearbox must keep up. Unitronic’s Stage 4 TCU Software has been tested on some of the world’s fastest RS3 and TTRS builds — balancing precision, strength and speed to deliver race-grade performance.
Perfect for drag, roll-racing, and high-output street cars demanding total DSG control.
Haz Motorsport Limited is an official Unitronic UK dealer
