Optimised ECU file package for the iconic 2000 Audi S3 1.8T 20V with Bosch ME7.5 ECU. This bundle includes two modified versions: a safe and efficient Stage 1 map for stock turbo setups, and an advanced Stage 2 for vehicles equipped with high-flow downpipes, sport intakes, or intercoolers. Based on software version 354092 and ECU 8L0906018N, these calibrations enhance response, boost pressure, and ignition strategy while maintaining drivability and safety.