This paper presents a new approach for mitigating the unphysical delay in the RANS to LES transition, often referred to as the Grey Area, which is a common issue for hybrid RANS-LES turbulence models such as Delayed-Detached Eddy Simulation (DDES). An existing methodology designed for improving the LES performance in complex flows is adapted and tested. This is based on reducing the numerical diffusion in critical areas for permitting a