down low. Definately revved quicker, I had alittle trouble with bumping the rev limiter in the drive afterwards. I didn't notice any increase after a few days. Also feels as if the engine "vibrates" more at very high RPM's as opposed to the stock pulley. I can feel it in the pedals when I'm over 6k.
One thing to note: I actually felt less of a difference with the 1pc driveshaft. Hardly anything at all actually, besides the horrible vibration being gone.