This Stage 1 ECU file is developed for the 2006 Audi A4 2.0 TFSI with Bosch MED9.1 control unit. Designed for the turbocharged petrol variant and 6-speed manual transmission, this calibration offers enhanced torque and sharper throttle response without compromising fuel economy or stability. Boost pressure and ignition maps have been refined for safe and consistent output under dynamic driving conditions.