Well, I'm not too worried about the serial communications aspect, I've developed perhaps a dozen different RS-232, 422, 485, and even SPI, CANBUS interfaces in the past year for embedded systems. And also, the Subaru protocol is easier than OBDII, no need to change the baud to 5, its fixed at 4800 8 N 1 and you can make it faster with a simple command.
Although I did not make it clear, my real questions were with Python's graphics. There are so many GUI options and I wasn't sure which one would be the best. I'm thinking that pyCard would be the easiest for me to pickup, from what I heard on the Python411 podcasts. But based on my hardware, could I expect screen refresh rates that can match the update rate of the serial port? I'm thinking 10-20 updates per sec would be the max I could get out of the serial port, depending on the max baud rate (currently undocumented/unknown but at least 38.4k) I could set it to. And for plotting, there are pleanty of plotting/charing options out there. I wanted to get some input on what I could use. I'm looking at matplotlip and gnuplot, but there are so many others. -- http://mail.python.org/mailman/listinfo/python-list
