Anybody had this done? the reason I ask is my brother is having a mobile service coming to do his car and I wonder if it would be worth having my car done at the same time (2007 rs4 )Thanks.
The standard version isn't a lot of use on direct injection engines AFAIK. Apparently the company do a tool that's designed for cleaning the backs of valves etc specifically for direct injection stuff, but I have yet to find a Terraclean place that actually has one.
