That's exactly what's visualized in the torque curve graphic. Multiple lines are in place to illustrate torque output at 16 different throttle positions. This is just linearly interpolated in rF1, so this is quite a big step forward in rFactor's engine simulation.
I'll admit, it's not 100% there. There's a couple of parameters I haven't quite gotten to grips with, so aren't using yet. Namely pressure sensitivity. But hey, even without that, it's a big improvement over standard rF1 engines I think!