Realize that the information that you posted in bold speaks on your MAP sensor, not your ECU. The MAP sensor does not need to be upgraded if you're not going over ~10psi. If you do end up boosting more than that, you'll need to go with something like a GM 3BAR map sensor.
Originally Posted by hondaswap
MAP/MAF sensors - All Honda's to the best of my knowledge use a MAP, or Manifold Absolute Pressure sensor as opposed to the MAF, or Mass Air Flow sensor.
MAP detect pressure in the manifold and returns a voltage reading back to the ecu telling it how much air is coming in, what kind of vacuum/boost it is in, and how much load it is seeing. It's an amazing little thing. All the fuel and ignition maps are based off this one sensor's reading more than anything else. It tells the ecu what table to use. I will explain this in more detail later. For the sake of information, the MAF sensors act similarly, but instead of measuring pressure, they measure volume. The volume of air coming in is then translated to the ecu by voltage, just like the MAP.
Again, MAP sensor is not your ECU.