Though the peak torque and power numbers don't surprise me, the manual's
curve is FUBAR.
If we assume that torque and power are using the same RPM scale, and that it's 1000 RPM per line, then the graph's RPM range appears to be 2000 to 8000. That would put peak torque at 5800 rather than 6600 and peak power at 7300 rather than 7000. However, plotting the torque curve at this scale results in peak power at only 133 kW (but at the expected 7000 RPM rather than 7300). So the power and torque curves simply don't match each other.
Out of curiosity, I plotted a power curve based only on the torque curve (using various scales, but assuming the peak is 6600 RPM). The numbers don't reconcile (for 147 kW) unless this curve goes way past redline.
Hypothetically, suppose this is an early version of the curve on which peak torque was at 5800. For kicks, I smoothed it out a bit and left in the (unusually large) mid-range bump, but moved it so that peak torque occurs at 6600. My curve has no basis in reality, but it's included for anyone interested (converted to HP and lbf*ft for convenience).
