first, apologies if this has already been covered. I live in Cyprus and have a 10 year old Feroza (1600 Sportrack in UK I think). Ever since I got it I have had a whistling noise when ever the throttle is even slightly open but it disappears if I lift my foot off. This happens in any gear and hasn't been affected by changing the air filter. It's not a serious problem but very annoying. Does anyone have any idea what it could be and how to fix it?