I have a Dragon performance tuning box which I bought originally in 2003 when I bought my new golf tdi 150. I never fitted the box asa I didn't know how and I was worried about the warranty etc. The box is still unused and I am now collecting my 2004 audi A4 tdi 130 sport on Friday. The question is will this box fit my audi, if not does anyone know the price of a digital tuning box? Have any forum members had any negative results or bu99ered engines from tuning boxes?