Hi, my car is a standard 4 gsr the only mod so far is the bov had been turned around by the previous owner, he said he had been loosing power so he took it to ralliart who could find nothing wrong with it, so he took it to M A Developments who had a tinker and turned the bov around. He said it was then back to full power. When I bought the car I didn't notice the bov making a noise at all. But over the next few weeks it started to get noisey. Anyway I have just fitted the Blitz air filter ( my first modification, they say you never forget your first time ) and now the bov is very noisey. I had a look and can't see that I have pulled any pipes off that I shouldn't. Have I buggered it up or it supposed to be that noisey ?