This white paper explores how CFD-based generative optimisation was applied to improve a turbocharged intake plenum for ANU Formula Sport’s Formula Student application. The study shows how ColdStream was used to move beyond traditional manual CFD iteration, targeting reduced intake energy dissipation and improved outlet flow distribution within real packaging and manufacturability constraints. The optimised plenum reduced intake energy loss from 15.28 W to 11.82 W, a 22.6% reduction, while improving flow imbalance from greater than 25% deviation to less than 2%. Physical validation confirmed the design’s manufacturability and functional feasibility.