This ECU file is designed for the 2011 Audi S3 2.0 TFSI (CDLA) with Bosch MED9.1 control unit, software version 501227. The tuning package includes a refined Stage 2 and an aggressive Stage 2+ file, tailored for vehicles running performance hardware such as downpipe, intake system, upgraded intercooler and optimized fuel components. Ideal for drivers seeking powerful delivery without compromising reliability. Dyno-tested and CMD Flash compatible.