Alan.
I have a 2010 Roadster Sport.which I bought last November from BHM. Apparently if you move the air intake from behind the rad and extend it over the rad ( look for a plastic upright lip and remove it ) you will gain 12bhp. I have this on good authority from one of our own and confirmed by BHM. My Sport is just beginning to free up now at approaching 10000 miles.
