"Real" load is measured in peak cylinder pressure and brake mean effective pressure. Since lab-grade combustion analysis equipment costs as much as most people's cars, we're left quibbling over this stuff.
Originally Posted by AruisDante
Now turbocharged cars are pretty much never going to do that unless you intentionally don't max it out in the lower RPM's. But I was simply using that to illustrate my point about what load represents. If you want to see a turbo car that comes close, here's a 2012 GTR:
It's basically flat from 3500-5250, and I bet if you looked at the engine map there is a constant load between those two points.
Most new turbo engines have flat torque curves from about 1800-5500rpm. Have you looked at the dyno curves on new BMW (M5) and Audi (S8) twin turbo V8's?