2.7 being Euro 4 or 5 and EGR blanking?
My D3 has a Territory 2014 2.7 in it and that was EU4 specs, so it is likely that they didn't go to EU5 on the 2.7. (At least not till after 2014 anyway.)
Best part of getting EGR blanking and emulators was about 20% drop in running temperature when driving about town (Temp needle now sits below halfway, unless I get on open road).
Those EGR's much add a considerable increase to coolant temperature, so getting rid of them has been a real positive.
Figure that has to be good for trans temp as well.
Would recommend EGR blanking if for no other reason than cooling improvement.