Dan, I can't believe you missed it!
Scientific Method meets Fuel Economy: Kammback
and the thread about it here:
http://ecomodder.com/forum/showthrea...-mpg-9185.html
Did you miss my most recent mod too? We discussed it a bit in K.C. as well, with the battery and alternator discussion:
http://ecomodder.com/forum/showthrea...roof-9549.html