[YeaG30]

I had a turbo replaced under warranty for a similar issue. I noticed a different sound from the engine and described it as sounding like a supercharger whine. I made an appointment to have it diagnosed and as I was driving it to the dealer, the turbo was intermittently losing power, i.e. under acceleration the car would feel like it was almost impossible to get up to speed. They kept the car and said they heard the noise, didn't experience the power loss when driving but went ahead and did a turbo replacement.

My recommendation is to have your phone handy so you can record any abnormalities when they occur and show the Service Advisor when you bring it in. How many miles do you have?