where can you get the dreamscience from? does anyone know?

There are 2 dealers that I know of that are actively writing Maps for the Fiesta ST

Jam-Sport - www.jam-sport.co.uk
Pumabuild - www.pumabuild.co.uk

Contact either one and they will send you the best suited map to the mods you have, or if you have the money you can visit them and they can write a custom tune for your car.

thanks Gareth!!

The third master dealer for dreamscience is Collins Performance:

http://www.mongooseexhausts.com/powerchips_dsf.html

But I would recomend either of the ones gareth suggested.