Hi,
Thanks to DCB for this great project and Mluckham for the metric conversion. I've built the MPGuino using an iDuino kit, everything went smoothly, installed it on my Honda Civic LX 1999, it's working great!
http://forum.ecomodder.com/images/smilies/smile.gif
I'm still in the ballpark about VSS p/km (currently 5100, I estimate it is no more than 10% in error) and uSec/km (using 0087696156 guess it is showing consumption 10 to 20% better than it really is...), need more time and fillups to calibrate better.