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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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Combo discount available
Save 15% or $150 (whichever is greater) on NEW Unitronic Performance Software from August 20, 2025 to September 5, 2025. See details.
Unitronic Software Guarantee for Audi RS5 2.9TFSI EA839 Unitronic Software Warranty for Audi RS5 2.9TFSI EA839 Unitronic Hardware Warranty for Audi RS5 2.9TFSI EA839
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