The low end torque is amazing, pulling like a turbo diesel from all the way down low, then here comes the horsepower climbing quickly where they meet right in a sweet spot of 5250 RPM. The horsepower peaks right where my observations are behind the wheel, shifting at 6 grand. The numbers show it will continue to pull well higher up in the RPM range, though shifting at 6300 didn't seem to bring anything more to the table as compared to shifting at 6000.