Hello. I previously posted a Q over in TunerPro and got a good answer, but in reality I don't want to just read the log file, I'd rather read the data coming off the ECU. So I googled the web, and there are tons of dead links. What I did find was an explanation of the two ODB1 modes - streaming data, or the later version where you request the data and it sends it back.

I am looking for technical information on how to read that data. I already have a serial connector that works with TunerPro. So I'm just interested in the software layer. Thanks!