Silver helps to virtualize ECU tasks on Windows PC, either based on C Code or a TriCore hex file. The resulting ECU model runs also in MATLAB/Simulink (MathWorks) and connects to INCA (ETAS) or CANape (Vector) to perform online calibration on PC. Other applications include mathematical optimization of ECU maps. A TriCore hex file runs with about 50 MIPS on a typical PC. When only emulating few ECU functions of interest, the ECU model runs much faster than real time, which is key for coupling with software for numerical optimization.