Here's the scenario: About a month ago I had new exhaust put on my Diplomat. The catalytic converters were done away with and the back of the head where the EGR tube goes in was sealed off. Ever since then, the car has been shutting down. This normally only happens when I am approaching a stop sign/light. I know I have good fuel. I have a brand new carb on it. I used an ignition test light to determine the spark is intermittent and weak. I checked the cheap and simple stuff first. Ballast resistor, cap, rotor, plugs and wires, voltage regulator, ECU, ignition switch, plus the distributor and pickup coil. I have replaced every part listed above and the problem still persists. I did find a ground wire which appeared to be chewed by a mouse. Fixed that and still shuts down. What am I missing? Oh, by the way, all the power in this car runs through the ampmeter. It works as it should too.