Bluefin stills uses the original base map that`s on the ECU, in the FRS case it`s AE or AF..

There are some negligable differences between the two, but AF does suffer from a notorious mis-fire at about 4500 - 5000 rpm which is frustrating, and bluefin / increase in boost only emphasises this. AE only really has poorer cold starting and slightly worse MPG , but to me it`s not really an issue and the car feels `stronger` with the AE map IMO