I made a cable to read my ODB1 info. I get a data stream, but I keep getting checksum errors. From the software ive been using (CarBytes and the other one they make), I need to adjust my timing of the software commands...Ive done everything I can think of, but its still not working.

Anyone have any success here? Im planning to write my own software, but I wanted to diagnose a problem "real quick" before actually sitting down to write software.

thanks