Better torque increase as well.
...and because torque is directly proportional to power, more power too (at those revs).
It sounds from looking at the video and reading your comments, it would seem that there is no doubt that the tuning box is giving you a little more power but its not very smooth... by all accounts, the DTUK box would give you at least as much power increase without the roughness... its not all about absolute power but usable power...
