Disconnect plug from TPS on opposite side of throttlebody. Pull back the rubber insulation so that you can place (3) small gauge wires in each of the (3) holes. Now you have to connect plug back to TPS but will have (3) wires sticking out. Turn on Ignition keeping wires separated (not touching one another). The 3 wires are for voltage, ground, and variable voltage. You need to hook the two voltmeter leads to two of the three wires. Hook one voltmeter lead to the blue (variable voltage) and the other lead to one of the other two wires. When you have this correct your voltmeter will vary from 0-5 volts when turning throttle blade manually. Now just grind stop and keep checking voltage with throttle held wide open to bumpstop until you reach desired voltage. I went 4.65vdc. Over 4.7 will set code so be conservative near the end. Mine went from about 78 deg. (4.41vdc) to about 90 deg. (4.65vdc) when done. If you have tcs you may have to adjust throttle cable length depending on how far you go with the bumpstop mod. I had to.
I hope this helps!