DIY Diesel Engine ECU using Arduino Mega
 

You electronics DIY folks that enjoy Diesel engines might get a kick out of this... a Finnish gentleman used an Arduino Mega to make an ECU for his Audi 5cyl 2.5TDI engine...

Video of it running:
http://www.youtube.com/watch?v=qj0S2...layer_embedded

Web site (a bit sparse but some good info): http://dmn.kuulalaakeri.org/dmn-edc/

(Hopefully this is not a repost :) )