I have read that there was an EPROM ecu, does anyone know what these came out of? I always look for them when I see a car parted out or a stack of mitsu ecus. I'm doin an n/a project and would like to be able to work my own ecu. Also does anyone know if these had a knock feature, if not can this be adapted from a turbo ecu. I have 10-15 turbo ecus, couple EPROMs and mostly non-EPROMs. So I have a parts supply.