The other issue it when my turbo kicks in it sounds like a screaming banshee. I think that it may be the blow off valve that came from AVO, but I'm not sure. Could it be a broken seal or something of that nature? There does not seem to be any degradation in performance (although I have kept my foot out of it since the noise started to happen.)
My apologies if this post is in the wrong area. (newbie)