Custom touchscreens

Screen orientation

Open the file crankshaft/chrankshaft_env.sh on the boot partition (that's what you see when you open the SD card on Windows) with Sublime Text, then edit so it says FLIP_SCREEN=1 instead of FLIP_SCREEN=0. Save the file, put the card into the Pi and start it, then wait for it to restart.

Custom touchscreen

If you use a custom screen or touch layer, it probably will have a better chance to work if you use X11. From image alpha 0.1.7 2018-03-10 on, if you want to start OpenAuto under X11, Open the file crankshaft/chrankshaft_env.sh on the boot partition (that's what you see when you open the SD card on Windows) with Sublime Text, then edit so it says START_X11=1 instead of START_X11=0.