Cummins X15 horsepower ratings

I'm using the Cummins X15 as an example, but this could apply to any engine. Since the X15 has several different horsepower and torque ratings, are there different engines for each of these, or is it the same engine just tuned differently? Like is a 525hp with 1850 fp torque the same engine as the 600 hp with 2050 fp torque? What about an engine with hp in the 400s compared to the 600hp? I hope I'm making sense here.



Source link