My opinion: Buy from Ross-tech.com. Best money I have spent on my car, hands down.
If you want any support go for Ross-Tech.Pirez said:Hi can anyone let me know hat type of vac cable do I need for my A4 Avant B6 2002. I have seem a few on ebay and the price varies considerably. Also do i have to go with serial or can I use USB.
Ta
Nick