I've got a factory fitted sunroof, electric tilt and slide. When it's fully open in the slide back position and I drive at anything over about 30-35mph I get what is probably the most annoying wind noise known to man! It sounds like a bassy fluttering sound, almost like a helicopter It blocks my ears in the same way as being on a landing plane or a London tube. It does my head in and is so bad that I just cannot drive with it open. Anybody else get this with theirs?? And if so, any tips on stopping it?? (Apart from the obvious "keep it closed"!!) I've noticed that if I stick my hand out of the sunroof it either stops or greatly reduces the noise. However, for obvious reasons this solution isn't feasible!!