Well, the PGMFI project has had a major breakthrough (THANKS Doc!) in the field of datalogging.

A stock EDM P30 running a modified program now speaks a very simple 9600 baud serial commuications language allowing all values in the ECUs memory space to be read/wrote to. A $20 serial interface box is all that is needed, hardware wise. This advance doesn't sound like much initially but realize all sensors and all values used for fuel/timing routines live in RAM. Add in that Vtec activation and probably injectors/timing control are implemented as memory-mapped ports ...

What we really need now is someone with lots of free time who is a very good VB, VisC++, etc. programmer that can write Windows/Mac/Linux applications based around this simple protocol for engine monitoring and management.

See http://pgmfi.crx-forum.org/ if you think you can help, or are just curious. More about this and the code in question can be found in the OBD1 forum. Beware: the code might not work in USDM ECUs w/o modification.

Peace
-Dave

 

Wow that is kewl. Isn't the P30 for the Del Sol though? Think it'll work for all the OBDIs? P28s and P72s are SO much more common. Good work!