Thanks! And what about software? What I'm looking for is something that will help me locate packets (like "What's the Packet that does X" where X is "raise the window" or similar)? VehicleSpy would be nice, but the Free version doesn't allow you to define messages, save the struc...

About 10 years ago I hacked together a breadboard with an ELM327 and an Atmel that would watch for keyfob unlock commands, and if it saw three in a row, lower the convertible top on my E46 M3. It's so long ago now that I barely remember what tools I used! I'd like to get back into PCM hacking, so ha...