If the hunting goes away after unplugging, it will probably still idle at 2k. An adjustment wont fix it, you need to lower your idle (adjust idle screw all the way down if need be). If your idle is at its lowest, you will need to see for any post throttle body leaks. This also means checking to see if your cold start idle up valve (one under the throttle body) is working correctly, you may need to remove it and plate it off if you haven't hooked up the cold start coolant lines. Also remember that the ports on that valve must be blocked off individually is not in use, do not loop vac hoses on them to block them off as it creates a bypass.