I have a 1988 Turbo TBird, and the car runs pretty good for its age but it has a very persistent issue on start up. The car will stutter several times from 250 rpm to 1250rpm but will stop after running for about 15 seconds and run fine after. I have tracked down a few bad parts but nothing seems to be affecting the main start up problem. Timing is set at 10, it is a hotter coil, 8mm wires and copper plugs. I have taken the car to another shop and even they could not identify the problem.