So, are you asking about tunes for your ST170?
There is a gentleman here under the name 1TurboFocus (Turbo Tom) that tunes the MK1 Zetec / Duratec engines.
You can find him here and get some answers to possibly remote tune your ride.
CLICK HERE - > To visit Turbo Tom's area on the site.
Hatch Nation Member: #147
R.I.P - FELLOW FF MEMBER, IZZY, BLK2k3GTS, will always be remembered. We will compete on a different course again one day.