Today my car felt unusual to drive. There seemed to be a lack of boost when accelerating. It didn't feel as powerful and there seems to be a bit of a whistle when I accelerate. Other than this it seems OK. Would this be the sign of a dv problem. I have read lots about people changing them in the past and I'm hoping that this is the problem. I have an 05 Gti with original dv. I believe that this is the type with the rubber diaphragm that splits. Do my symptoms fit with this? If so, I'll try and get the rev g fitted in the new year. Please advise, thanks.