would this hurt my svx

I've heard a lot of things about pulling the resistor. And I want to do it, but I dont want it to shift hard all the time, every now and then I would like to have the nice smooth shift. So I was thinking putting a switch in, up the resistor is in place; down, it's bi passed. I remember someone saying that the computer is going to have to get used to it. So if i was turning it on and off, would that cause my car to have issues?