The best way to set the TPS is by connecting a generic OBDll scanner to the car. The scanner will show the TPS position in degrees. It should be set at 1 1/2 degrees with the engine at proper operating temperture.
I did mine on the car. I set it at about 90 ohms from the centre pin to one of the outer ones - it will be obvious from the resistances which pin is which. My car idles at 1150 and no check engine lights.
I set mine on the car. I set mine with a slightly different method. I leave the plug connected to the tp but pull the boot back. with a digital multimeter i put the positive side in the back of the center terminal and the negative side attached to the block. With the ignition turned on, engine off it should read about .7 volts. I have found this works good for my car.