The ELM323 allows you to turn your computer into an Auto Diagnostic System. This is all you need other than your car, the free software & your computer. Non-free software is also available.
GALLETTO EOBD2 is automibile interface for updating software (typical chiptunning) working on EDC16, EDC15, MEx.x , DELCO and many more engine's ECU. It is compatible with the newest modern diesel TDi, HDi, JTD, petrol cars.