The Multiscale Heat & Fluid Flow Lab (MFL) is conducting advanced research on airflow dynamics within SUV cabins, focusing on the performance of extractor systems. Flow visualization technique called MRV(Magnetic Resonance Velocimetry) is utilized to analyze the velocity field surrounding the Extractor Grill outlet of SUVs, aiming to enhance air exhaust efficiency and reduce internal pressure. This research examines how pressure differences between the interior and exterior contribute to tonal noise, such as whistle sounds, during high-speed driving. To address this, the lab is developing optimized outlet geometries that mitigate pressure differences and improve flow characteristics at the extractor outlet. Moreover, MFL is investigating the correlation between outlet flow structures and pressure-driven tonal noise across different vehicle architectures to establish a universal SUV design framework. This research is being pursued in collaboration with the Acoustics and Vibration Lab(AVL) and is HYUNDAI NGV.