Strange noise

[dougieboy]

My 2003 leon cupra when hard acceleration theres a screatching noin from engine area iv replaced alt belt tensioner and alternator pulley any other ideas

 

[rsmith]

Boost leak maybe? You should put up a video(with audio) if possible.

 

[dougieboy]

In 5th n 6th full boost holds at 20 psi and does not make the noise will try get video