It was WAAAAAAAAAAAY before that.....was more like early last year.
I think it was shortly after there was a major fault with the engine manafold catching fire. There was a tech fix for that and i seem to recall it was around then.
Basically Euro4 emmission conformity came in at teh end of last year. TO come inline with that the Meganes ECU was changed and the numbers in the ECU are different to those that are not Euro4 complient.
Paul had an issue running the remap on a Euro4 engine hence his poll.