Hello, I am wondering if anyone has had this similar problem and know what it is I know the turbo is on its way out and I’m getting a replacement asap, I recently replaced belt tensioner and alternator. Could this be the turbo acting up? Or a engine problem. It starts to make this noise after a long while of driving and starts to stop when you slow down and come to a stop

https://m.youtube.com/watch?v=RWei8fE3AZo&feature=emb_title