Go onto this site http://www.tdocuk.com/ Its a forum for diesel motors I'm on it there are lots of ppl with diesel engine knowledge and they are very good and helpful. As for you ramapping issue's I had my Mits Lancer taken from 140bhp to 187bhp and that was nearly 2 years now and I've had no problems. The remap specialists tend to know what all cars can achieve so you'll be fine.
