Here is the link for the above-noted document:
Q400 Fuel Efficiency Manual
The unfortunate sentence in that document is found on page 33: "If a cost index solution is developed..." That is, Bombardier has everything ready to go if someone else is willing to develop the software and uplink data. Many companies have developed their own EFB related software, but it is not a Cost Index in the true sense of the word where a value of 30 or 50 actually means something. Often it is nothing more than "set for the fuel flow to this and hope for the best."