Having done some more mods to my trust A4 B7 2.0tfsi Quattro avant (220 BUL) i'm thinking about a re-remap now to make the most of the fitted parts. I had a stage one map a while back which was at a safe and reliable 250bhp , now it's time to revamp things a bit to make full use of the high flow cat etc. Having read a fair few articles and discussion on the subject of installer remapping -v - tuning boxes there seems to be a lot going for the newer generation self install boxes, so I was hoping top get some more audi based feedback on what the format really is from an end user point of view. I have been looking at the german company " Racechips " for a possible solution and they do seem to be a good option , moreso if one goes with the better spec ones. I was looking at the racechip ultimate box , as below, any thoughts chaps on it or anyone using the setup themselves, any feedback would be great.