N̈nm
Just to point out someting that should be obvious...
I have a basic 110hp, T6.1 T32 SWB 5G, and, you know what, it is perfectly driveable as a family car/work van - if you do not expect it to run like a Porsche or pull like a Caterpillar. You just have to drive it like .. wait.. a van.
I drive for work regularly up and down the Alps with a few tools, and last summer I was long about in Southern Italy at 2.9 tonnes total, 40C, and I got no problems at all. The small (-ish) 2L VW Diesel is just IMPRESSIVE as fluid torque erogation, so MUCH that for this I do not miss a bit my old good Vito, that had about 30 hp, 200 CC and a whole 100 nm more (and a better gear).
The VW TDI (DNAB in my case) is the closest thing to an Electric motor that I have ever driven, it starts to push at about 1100 rpm and I never need to run it more than 2000 for more that a few seconds (except on the highway in 5th, of course). It does not miss a beat, it goes up and down very smoothly as you do the same with the accelerator pedal. You do not even need to brake so much, becuase the engine is helping you there too (like a good Diesel should do). It must be like .. the evolution of a breed that has improved itself with the millions of specimens (and now it's sadly almost estinct, thanks EU!).
To give you some cold numbers, my travel times on long distance streaks (i.e.1000 Km/day ) are only 10% more than with my Mercedes SUV (staying barely legal with speed), and my T6 does them with one single big tank of fuel, so I can decide where to stop more conveniently.
So it is a matter expectations. You may WANT 150 or 200 hp / 400 nm, but you do not NEED them.
P.S. as someone told you already there is not a direct remapping for my one, that I know. Bosch has put some nasty software coding inside, to resist that. I know, however, that raising a bit the torque you are seriously risking to prematurely kill the "delicate" 5 gears box.
