I just figured out how to figure out the power and weight of concepts like the FT-1. You know, the ones that hide their power and weight figures?
My 550 PP tune for the FT-1 has 506 hp at an unknown RPM value and weighs 1320 kg. You find out by sorting by HP for one trial and weight on another. Then you find what cars you can modify HP and weight so that they "pinch" the concept between two values; I always take the worst of the two values. I pinched the FT-1 between 506 hp and 507 hp for power; I then pinched it between 1319 kg and 1320 kg for weight. So I concluded it has 506 hp and 1320 kg!
This should be helpful if you ever wish to make a tune for cars like that which allow suspension tuning, like the 2013 Honda NSX Concept.
(I know the FT-1 does not allow suspension tuning, sadly.)
Now then, to get that hp value I changed the oil and put the power limiter at 99.4%. I added 0 kg of ballast.
Edit: Now I took the NSX Concept and tuned its power for 550 PP. I did not change the oil. The power limiter is at 98.9%. The end result is a car with 557 hp that weighs 1500 kg.