Here is MMCD opensource code
Unofficial MMCd Project Site
Maybe it is possible to use its logic and some code to make that data to some useful values in MPGuino.
I am also interested because I have Mitsubishi Eclipse with 4G63 engine - I have succesfully made data cable (simpler version - only some resistors and diode, no MAX chip)
cable schematic (used laptop to ECU schematic)
Make a datalogger cable | Galant VR-4 > How To and Info Archive | GalantVR-4.org Mitsubishi Galant VR4 Forum
I did manage to get data on laptop, using TMO Datalogger.
http://enos.itcollege.ee/~jylenomm/T...0tmologger.zip
Meelis