QST ECU Software Audi S4 / S5 B9 / SQ5

Inc. VAT

QST ECU Software for the Audi S4/S5 B9 3.0 TFSI 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: 410-414HP, 620NM Torque

Stage 2: 440-450HP 650NM Torque

ECU/TCU Software

Read More