I'd recommend getting a rolling road to see if the Bluefin has achieved the advertised power increase. The beauty of self tuning boxes is that you can get a print out of before and after power outputs.
Only mentiioning this as a friend's healthy GT TDi 140 ran 146bhp in stock mode but only 165 bhp on Superchips Bluefin map (not thier advertised power increase
)
As far as I know Superchips were very helpful and sorted it out for him but I'd get it checked, for all manufacturers not just Superchips. You might get a good surprise. I used a Shark Performance Self Tuning System (STS) and got 182 bhp (Golf GT TDI 140) instead of their advertised 170!