i was just saying pete as its a good tool to have, as like you say the scangauge can only do so much with the tractor engine,
this is what i have,
http://cgi.ebay.co.uk/EOBD2-OBD2-dia...item3efe4afe2f
get the software off the "net" and plug into your laptop, this reads the codes and with some software it tells you straight away what the fault is by reading the code