Recently I have visited several SC's and am using a local Supercharger regularly. In 90 degree weather. I have noticed that when running the A/C and charging up that there is an incredible sound coming from the frunk. Like a motor? Or blower? When I turn the A/C off, it slows down. When I, moments later, turn the air back on it practically fades to 0. But then within a few seconds, returns. Is this normal?