Your comment that it is not green is right on.....Why is HP important (unless you run at the peak of the HP curve all the time)? Why is torque important unless you are constantly pushing for a better 0-60 elapsed time? Why then does it matter the impact of octane on performance? The real key is what really matters to driveability as you measure it (most of us by MPG). Sorry.....but I obviously do not understand where you are coming from.