I`m using carsoft 6.5 and the obd II interface says it`s for 6.1 or 6.5. To be honest I dont know how to use the software, but it looks like you can do a lot of coding (not sure what that is). The live data is great, take the car for a spin with the laptop showing you live data and you`ll poo your pants! I also used to own an Audi but the most I did with that was to add a CAN BUS interface for my sat nav. I love computers and programming so what a dream when I bought a car with onboard computer and an interface that I can tap into.... Live data shows allsorts, even air pressure around the car, intake temp, oil temp, other temp, how many percent your accellerator is pressed, and LOADS more. You can also turn ON drive away locking which locks the car as you set off. Change loads of localised settings like language, MPG or LPG, Kilometers or miles etc..

Re the PDC, I sussed out that it was my front number plate that was causing the trouble. I`m in the UK and they are wide plates here, I just stuck mine down (it was screwed at first) and it seems to be fine now.