I'll trade you problems. Mine runs poorly after it warms up, runs great when its cold.

I know this will sound dumb, but is the stove pipe between the exhaust manifold and the air cleaner housing connected properly, and does the vacuum door on the air cleaner snout function correctly? Way back when this efi first started, the biggest single thing causing poor drivability when cold was the tube between the manifold and the air cleaner housing.
Gene