Not a problem at all. Yes bought sold traded and NCTd diesels with remaps, EGRs bypassed, CATs removed, ECUs remapped for either performance or economy, ran them around the Nurburgring, Mondello Park, up and down Alps, along the Cote d'Azure amongst all the Bugattis, Ferraris and McLarens - had great fun. Yes, and if you can get a cheap OBD2 code-reader, I'd recommend it.I hear the NCT is not a problem either - also have you ever sold a car that had the remapping done? Thanks again