Excessive whistling sound

I have read the previously opened topics, they wrote that the whistling sound is over, but I would like to ask if it would be OK to use it in this way.

My car lay down for about 1 year, this was not a problem before, now when I press the gas, I get enough whistling noise and I feel low on traction unless I am so overpowered. Vehicle 307 1.4 HDI.

I am not someone who presses too much gas, I use the car between 2000-2500 rpm.

Do I need to replace or repair the turbo, or do I get more work if I say go where it goes?

Thank you for your help.

Accident-free riding.