Maybe it's just me, but most people who have been doing diesels for the last decade (or two) have no f*** clue WTF they're doing when it comes to tuning. Yes they get power out of their stinky diesels, but most of them don't have the slightest clue why or how.
+1.
You can get more power out of a diesel with +10% on a selected square in boost and +15% square in duration map.
Which is what 99% of these do. They have no idea about tuning whatsoever.
Also, Motronic is VERY different from EDC. Just because someone has tuned diesels does not mean they have any clue about tuning Motronic.
Start from scratch or go home.