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Unitronic Stage 1 TCU

For Audi RS5 2.9TFSI EA839

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TCU Software Precisely Engineered to run combined with a Unitronic Stage 1 and Stage 1+ performance software.

Performance Software for your TCU Box Code is subject to availability.

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Features
  • Unitronic Engineers identified gearbox originating torque limitations on the TCU side of the AL552 transmission. In order to overcome these limitations, while ensuring proper torque management and operation, a TCU Performance Software was required to run Unitronic Stage 1, 1+ and Stage 1+ E85 ECU Performance Software for the B9 RS 4 & RS 5.

    Stage 1 TCU Performance Software calibrations necessarily increase the torque limiter for seamless torque management and harmonious operation with the corresponding Unitronic ECU calibrations and further enhance the user experience.

    For MY2022+ vehicles, TCU tuning is not required as Unitronic has developed special ECU Performance Software which incorporates a proprietary "gBX" solution. These "gBX" ECU calibrations were developed specifically for MY2022+ vehicles and allow Unitronic to deliver a full torque experience without transmission tuning.
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Oil and Additives Recommendation
Unitronic uses and recommends Liqui Moly Oil & Additives exclusively for your vehicle, which meet Audi/VW approvals. To ensure your vehicle is maintained with the #1 oil brand in Germany, see what is recommended for you with the
Liqui Moly Oil Guide.
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Save 15% or $150 (whichever is greater) on NEW Unitronic Performance Software from August 20, 2025 to September 5, 2025. See details.
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