Optimized ECU firmware for BMW 540i (G30) with the B58B30M0 engine and Bosch MG1CS003 ECU. This complete binary file, based on software version R0C9J8B2B, includes Stage 2 tuning with Vmax limiter removal and Decat logic (post-cat lambda off). Designed for ULEV70-spec models with automatic transmission, this remap delivers enhanced performance, throttle response, and off-road exhaust flexibility.