QST ECU/TCU Software Audi S4 / S5 B9 / SQ5

QST ECU/TCU Software combo 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. Improved drivability, faster up and down shifts with improved launch strategy and improved torque management thanks to our developed transmission software.

Stage 1: 415-425HP, 620NM Torque

Stage 2: 440-450HP 650NM Torque