When I floor it the turbo spools up and at around 3000 rpm I hear a clear whistle sound for a couple of secs. 

 

I have had turbocars before, but not with such an audible whistle.

 

I hope its not a problem with the engine/turbo.

 

But I would like to check with you guys.

 

The mileage is 5000 km

Most turbos whistle a bit. Its not strange.