Ok, I have an 87 engine (TBI) and i know you disconnect the tan/black stripe wire to set the base timing....aside from disabling the electronic advance, what does it do?? or disable, is more accurate maybe? does it remove the computer altogether from all systems?? I'm just trying to rule something out. It runs great unplugged (well, 'cept it doesn't advance the spark), but connected at idle, in gear it stalls. Any thoughts fellas?