[Kinanizer]

Wa-wa-wa-wait. So is this Psi ball physical? Or is it something you imagine.

It's not imagined, it's actual energy. Scientifically speaking, heat is pure energy, and the way you make a PSI ball is with heat. Meaning that yes it is real.

Is it possible to hear strong wind while you throw it or is that just me?

As stated above, you are actually throwing something. If you didn't hear something then that would be odd.