http://www.lohen.co.uk/shop/proddetail.php?prod=SuperchipsBluefinRemapMiniCooper

Anyone heard of these? £200 for 10bhp seems pretty good.

dunno....

but youll get a discount if you join this forum first...
http://www.stdrivers.co.uk/forum/showtopic.php?tid/7284/

(apparently)

£200 is a lot for a bit of spark advance and slightly more fuel.

20 years ago, it would be the same as a bigger main jet and advancing the timing a few degrees. Nowadays its all the rage!