QST ECU Software Audi RS4/RS5 B9

Inc. VAT

QST ECU Software for the Audi RS4/RS5 B9 2.9TFSI Twin Turbo. Our Software has been expertly developed on the dyno and tested vigorously on the road to provide a fully developed tuning solution offering exceptional gains in HP and Torque throughout the powerband and drivability exceeding expectations whilst still maintaining complete reliability as you would expect.

Stage 1: 510-515, 755NM Torque

Stage 2: 535-546HP 790NM Torque

ECU/TCU Software

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