A whoosh under throttle and power that went missing. A split hose or a loose clamp.
A split charge pipe, a loose coupler clamp, or a leaking intercooler end tank.
Cheap to find with a pressure test. Fix it before the engine runs lean under load.
Reading about sounds only goes so far. The tuner on our home page listens in your browser and tells you what it hears. The app goes further: it names the exact fault, checks it against your vehicle, and tells you how urgent it is.