Morning All. A two fold query this morning please. I have a 3.0 Tdi Quattro A6 Saloon, 2006, 233bhp. Obviously I am very pleased with this car, but am considering having it "tuned" for Christmas present to myself.... So I guess 2 questions, firstly is there anyone on here who have had the same engine tuned / chipped etc, and if so what is your personal advice and experience. Was it worth it, what are the differences (apart from more power of course). And secondly I am thinking of having mine down by Shark Performance Tuning through one of their tune at home units, which they have on offer for £399 at present. Seems a very reasonable price to be honest, just wanted to know if anyone has had any experience of these guys, either positive or negative? Thanks so much in advance for your feedback on this.