So its about $150.00/1HP. Figuring you have about 1500 in it.
The higher revs would be very nice depending on max HP at what RPM> Meaning, if the sweet spot for shift is 7000, 8200 becomes incidental. HP is the ability to make torque. I also expected the torque numbers to climb.
I bet it is a ton more fun to crank up than before you did it.