Was looking at a fmic, turbo back exhaust and remap. Pretty generic route i think for most ST's. Ive read on t'internet that the turbo is only good for 260BHP, not sure where i read it though.
can get all of that from mountune. The turbo seems to be good for about 280-300, after that people start fitting different turbo's.
Mountunes 260 package + the exhaust should ease upto 270ish. How old is the car?
If you're going to keep it, the Mountune is definitely worth the money IMO, far better development has gone into it and the way it makes useful power rather than pub figures keeps other tuners' "300bhp" kits at bay.
They look much better, too 
Thanks for that, will phone my local dealer.
Mountune for the Focus is in one stage. The Exhaust is a separate package.
its the Fiesta that has 3 stages, 165-185-200
thought i was going mad there for a moment.They claim 260bhp, but in reality many make around 280 on the rollers.