How do you match turbocharger or supercharger sizing to engine requirements?

Boost system matching involves: Defining target power/torque curves, calculating required airflow and pressure ratio at each operating point, selecting compressor map (surge margin >15%, efficiency >70% in operating zone), matching turbine to compressor flow and engine exhaust energy, analyzing transient response and turbo lag, thermal and structural limits of components, and integration with wastegate/VGT control strategy. Tools include 1D simulation (GT-SUITE) and CFD for detailed flow analysis. Two-stage systems or electric compressors address wide operating range requirements. Validation includes steady-state mapping and transient testing.