Considering that this is the team thread my post will be a little off topic as the last few previous posts have been (mods feel free to move this if you so desire).
People seem to be taking this 223 number quite literally. The original article seems to have got mistranslated and quoted multiple times by other F1 news houses. As such pieces of information in the original article got lost.
If I remember correctly the original article said that "at times" there will be an increase of 223 hp. It would seem that the way it was stated is while not untrue, very misleading.
What I believe the author meant was that we go from a worst case scenario for the 2015 PU (a part of the lap where the MGU-K was not receiving any power) to a best case scenario for the 2016 PU (where Honda have hopefully fixed any MGU-H problems and have an almost constant supply of electricity to the MGU-K when desired).
Let's break down the 223 hp. Firstly it appears (to me at least) that the author is talking about metric hp (generally referred to as PS). 163 PS is just about 120 kW. I.e. The power of the MGU-K at full power (minus any efficiency bonuses discussed by TC previously) vs a point on the track where the 2015 PU maybe have run out of energy for the MGU-K.
That leaves us with a 70 PS bonus which it appears that the author believes that Honda has found for its 2016 ICE (70 PS is just about 69 hp).
Frankly I'm not even sure if to believe that Honda have found 70 PS over the winter just from the ICE, it's quite a lot.
I hope this wasn't to drawn out and confusing.