Need Help with whining noise

[Mobo]

Bought a leon fr tdi with bnm engine recently and noticed it sounds fine up to 89 degrees but once the car hits 90 degrees theres a whine from the engine that gets lounder the more rpm
ive tried to make a video but its not the best
any help will be appreciated
https://drive.google.com/file/d/11cs40dKiqntTAsjGxpyPzuNZ2uiu4LNZ/view?usp=sharing