I like shopdap - Paul (owner) puts out good content IMHO for the VW/Audis. Here's one that they just put out on carbon build up which is relevent to anyone with a GDI engine looking at cleaning carbon. Tested a few different methods which I though was neat. In the end, you can't beat media blast I think as it's the standard way to do it (and the way mine was done when I had this service performed last year).
(video link removed - MOD)
(video link removed - MOD)
Last edited by a moderator: