Stage 1+ Performance Tune | RS3/TTRS 2.5TFSI

The sweet spot between a simple bolt-on tune and a full hardware build. Unitronic Stage 1+ ECU Performance Software is designed for the RS3 owner who wants significantly more power without committing to a full Stage 2 hardware setup. No intake, no downpipe, no intercooler required — just a TCU tune and you're ready to go. All lower stage variants are included in one purchase.

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

• Speed Limiter Removed — Factory top-speed governor deleted from the ECU.
• Broader, Flatter Torque Curve — Maximum torque achieved sooner and held longer for stronger, more linear acceleration.
• Improved Fuel Efficiency — Optimized timing and injection during cruising conditions for better economy under normal driving.
• Optimized for Higher Octane Fuel — Ignition timing precisely calibrated to extract maximum power and efficiency from 93 oct / 98 RON fuel.
• OEM Safety Systems Retained — Factory fail-safes remain active for long-term reliability.
• Smooth, Broad Powerband — Engineered to reduce low-end lag and maximize responsiveness under all driving conditions.
• Speed Limiter Removed — Factory top-speed governor deleted from the ECU.
• Full Stage Suite Included — Comes with Stage 1 and Stage 1+ variants in one purchase.
• Rolling Anti-Lag (RAL) — Available on FLEX-enabled calibrations. Keeps boost up on rolling entries. Use carefully — it is very hard on the engine.
• 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

• Stage 2 TCU tune is required alongside this ECU tune — get the Unitronic Stage 2 DSG Tune here.
• NGK R7437-9 spark plugs gapped to 0.024" (+/-0.002") are required for Stage 1+ E85 calibrations — replace every 10,000–15,000 miles.
• Software availability is subject to your ECU box code.
• 2019+ models may require the hood open during the flashing process.

Recommended Hardware

• Unitronic 3" Turbo Inlet Elbow for 2.5TFSI EVO
• Unitronic Intercooler for 8V.2 RS3 / 8Y RS3 / 8S TTRS
• 2.5TFSI EVO Spark Plug Set (NGK R7437-9) by Unitronic
• Unitronic UniFLEX Hardware Kit w/ Ethanol Sensor for 2.5TFSI EVO