http://www.tgdaily.com/content/view/31488/145/
You don't need this device if you have an Eprom burner and the proper software. I attempted to do this on my old Honduh before I sold it. I believe the more ethanol mixture vs gas mixture you have, the hotter the spark has to be. I did a little bit research but not that much since I live an hour away from the nearest E85 station.
If I lived anywhere near Tirerack in Indiana, I would've already perfected a Honda map and never sold my car as there is a major Ethanol plant near there.