QST ECU/TCU Software Audi RS4/RS5 B9

QST ECU/TCU Software combo 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. Drivability is improved with faster up and down shifts with better torque management via TCU software. 

Stage 1: 510-515, 755NM Torque

Stage 2: 535-546HP 790NM Torque