[elhigh]

Look at the top of the page where it says "Garage & Tools." While you're signed in, clicking on Garage will drop down, among other things, an "Add a New Vehicle" option. Click that and you can enter info about your car and start keeping track of its fuel economy. Keeping records is everything in this game; if you don't know how you did, you can't judge how you're doing.

Yeah, you have the bigger engine in your Accord. That hamstrings you a little, but it can do better, I'm sure of it.

With the older ECU, I think your only option will be the MPGuino, and I am completely unfamiliar with it. I got nothing. But look around on this forum, several guys here have one or more and will be able to tell you a lot, I'm sure of that much.