im surprised at the replies there? why not get a dump valve? i think it sounds absolutely awesome!! and with regard to the chatter im sure im on about summin else. my friend had a recirc valve onhis seat cupra and that made a noise like a pigeon rather than a choof. im sure that werent gases hitting the blades fo the turbo??? it seems the focus is pretty poor wen cold on tickover ne way. my fathers and my bros often cut out wen cold.