Ever since I put in the forge BPV when under boost my car whines, almost like a supercharger. I miss the quite HISSS noise, anyone else notice this? Or should I pull it back out n reinstall?

 

Sometimes I can hear a little whine when it is cold but less than I used to hear with the stock valve. When it is not releasing pressure, it normally doesn't cause any extra noise for me. It is easy to double check the spring and maybe try the other spring. Perhaps also check the hose clamp on the hose to it.