I might be wrong because i know stu @ Motorsport Developments is mapping god, but i dont think theres much umprovement i having a ST170 re mapped or "bluefin" or "chipped".

Infact most of the ST170's i have seen on bluefin's have made less power than std ST170's, but the owners report they "feel" like they pull better

Maybe having one live mapped will make it better mid range power than over all power tho