You are unlucky in having the most gutless version of the 2.8 that I can imagine with all that emission stuff on a 80hp version, as I mentioned before I had a 2.5 similar Sofim engine in my first Iveco which was rated at 80hp, it was a 35/80 which meant it was a 3.5 tonne van of 80 hp, but being Iveco it was still capable legally to tow 3.5 tonne at the same time which they did very well, albeit low geared, mind you it had none of the emission stuff of yours.
The 2.8 in my last one the Ducato Maxi van 1997 was a 122hp, I fitted that engine in a boat that originally had a V6 3.75 litre Volvo Penta 150 hp petrol engine and after adjusting the pump and turbo as that model was turbo intercooled I was almost able to match the original engines 30 knots which it did when brand new and 10 gallons of five star petrol whwere as I got 26 knots and averaged 4 gallons to the hour on diesel.
I ran it like that for over four years summer and winter so I would say yes a good reliable engine, with the proviso that it must have regular oil and filter changes and cambelt when due, also never drive hard until fully warmed up.
Yours is a strange one having a MAP sensor, crank sensor, EGR, ECU etc.
I am not saying no to a injector pump , but all of mine had well over 100k miles some 250k plus and none ever needed a injector pump or even in my ownerships injectors.
Trouble is now the mechanics are only familiar with ECU controlled much later engines that are nothing like the old stuff.
As you can see in the photos that was all done at a max rpm of 3690, which it could hold for hours once fully warmed up.
