has anyone thought about replacing the ECU entirely with an open design like
EPIC:
http://thedotcommune.com/oepec/index.html

also, I'd be interested in hearing about experience with using or building
the Digitool described here:
http://www.loam.org/vw/Vanagon/DigiTool/

or other ECU hacking related goodness the list would like to share.

Steve