Hi eraydagci,
no it is possible to read data from a Honda ECU.
And all the calculations are documented by Gonzo (you already found the link) and just need to be adapted from his RaspberryPi Solution to Arduino.
I cannot to this myself, due to missing Honda and two little children, which have a higher priority right now 
Searching for something similar, leaded me to this:
Seems like a great startingpoint for you!