Stage 1 Performance Tune | RS3/TTRS 2.5TFSI

The perfect starting point for your RS3. Unitronic Stage 1 ECU Performance Software is precisely engineered for a completely stock car — no hardware modifications required. Just flash and go, with immediate, real-world gains you'll feel from the first drive.

Software can be flashed at our location in Cornelius, NC (just north of Charlotte) or at home using the Unitronic UNIConnect+ Cable.

Power Gains

Features

• No Hardware Required — Engineered for a completely stock vehicle. Flash and drive.
• Speed Limiter Removed — Factory top-speed governor deleted from the ECU.
• Optimized for Higher Octane Fuel — Ignition timing precisely calibrated to extract maximum energy from 91 oct / 95 RON fuel.
• Improved Fuel Efficiency — Optimized timing and injection in cruising conditions allows for better fuel economy under normal driving.
• Broader, Flatter Torque Curve — Maximum torque is achieved sooner and held longer, resulting in a smooth, linear powerband and stronger real-world acceleration.
• Reduced Low-End Lag — Improved throttle response and engine responsiveness throughout the entire rev range.
• OEM Safety Systems Retained — Factory fail-safes remain active for long-term reliability.
• Extensively Dyno & Road Tested — Developed on Unitronic's in-house Maha chassis dyno, then validated in street and track conditions across multiple vehicles before release.

Important Notes

• Software availability is subject to your ECU box code.
• 2019+ models may require the hood open during the flashing process.
• This tune is calibrated for 91 oct / 95 RON fuel only. Using a higher octane fuel will yield additional power and efficiency gains.

Recommended Hardware & Software

• Unitronic 3" Turbo Inlet Elbow for 2.5TFSI EVO
• 2.5TFSI EVO Spark Plug Set (NGK R7437-9) by Unitronic
• Unitronic Stage 1 DSG Tune for RS3 / TTRS