Hello George, I`ve been reading up on proper parts for our cars and it is likely your car did come with a single point distributor #2875796. In `69 dual points were reserved for 4 spd. cars.??? With that said, what do your plugs look like? Are they fouled ,appear sooty ,or a nice chocolate brown? Weak spark? Plugs heat range okay? Carburetor leaking down? Those single screw AVS carbs are first generation emission controls, the two idle mixture screws are generally set very lean and then leaded over. The air mixture screw shouldn`t come out much (maybe one turn) to get it dialed in. It sounds like you`re out of the idle circuit with your vacuum advance and tapping into the run circuit of the carb. At idle your carb shouldn`t be pulling that advance in. All of the aftermarket electronic ignitions benefit from a hotter spark, less deviation in spark timing, and eliminating points. The MP electronic ignition is a good system, basically the same thing they came up with in late`71 but it`s proven itself as being relatively accurate and durable. The MP conversion system is set up from the factory so it`ll work in everything from a 273 2 barrel to a hp 340 ,so there`s always room for improvement. They`re set up rather generically. As the guys mentioned a dist. guru (like Don) could replace the springs, dial in both advances, or whatever it takes for optimum performance. It`s recommended to replace the VR as the electronic system is harder on the old regulator. I`m running the original VR with the electronic kit without a problem. There is a new VR that appears old but is filled with solid state internals. If you`re looking for an authentic look that`s a good choice. The MP electronic ignition on my stock `68 340 times out something like 16* initial, 18* mechanical, 16* vacuum advance.
