Hit there
was just reading through alot of old threads and read a little about an ECUtalk computer to help diagnose issues and gives readings on coolant temps, engine speeds, horsepower and so on.

here is one i came across
http://www.scangauge.com/

Has anyone got one of these set up? and how they find it, is it helpful?
also would one connect up to my 01 GU 3.0ltr td???

cheers all