CAr stalls at stops but is fine after a few miles.

It sonds as if when your computer takes over operation of the engine everyting is ok. So you shold look for maybe a fuel problem. Your fuel pressure should be 38 at idle. It can also be that your throttle plate is a littel gunked up and can be easily cleaned with choke cleaner on both side. How ever check for loose or holes in yoru air duct goign to the throttle as this can effect it as well. Also check for a vacuum line off as the computer would enrichen the fuel load if this is the case.