Just recently my cx7 makes a noise when I step on the gas fairly hard. Like air is restricted and can be heard in the cabin with windows up and no radio. It's weird bc I just had it serviced at Mazda and everything was fine. No check engine.

It's like a swooshing notice only when accelerating fairly hard. Really sounds like a restriction in the intake but I checked it and see nothing wrong. Any ideas? I can post audio of it if need be.