Stage 2 ECU calibration for the 2013 Audi A4 2.0 TFSI CFKA with Bosch MED17.1 ECU, designed for 6-speed manual gearbox. This file maximizes turbo efficiency and optimizes fuel delivery maps to support upgraded hardware like downpipes and intake systems. The file maintains drivability while offering a more aggressive powerband — ideal for performance setups running CMD Flash protocol.