Deamscience has been Discontinued for the ST170, they will remap the blackoak ECU on a one shot basis if you go down to their unit but your restricted to that one map. Look for a second hand Strategem unit and then send it to Dreamscience and for a fee they will reset it. This will give you a few levels of tune and you can switch between them, bluefinn has 4 tune levels
95 octane standard exhaust
97 octane standard exhaust
95 octane modified exhaust.
97 octane modified exhaust.

Hold out for a dreamscience if you can