About $50 on ebay just search "c100 obd" and you will find it.
Mine is a stock
ecu
I work in Cannington and live in kelmscott
What area are you in? Send me a PM and we can arange a meet
Sorry to re ask but you never said, is your car currently running on an ecutek tune? Or looking to do it in the future? Or your unshore of what your
ecu is running? If your running a stock
ECU it should work no dramas,
Although when I plugged it into a 2003 It would not read as many extra things, water temp and so on, only a limited amount of things showed in the menu.