2003 Pontiac Montana

At idle it running at -20% LTFT and under throttle it goes to +10-20%. I’ve smoke tested it, different injectors, pump, intake manifolds. When you hit the gas it will stumble and die. No codes. Good fuel pressure 40 psi at idle and goes up to 55 with throttle. New plugs, wires, intake gaskets, fuel pressure regulator, idle air control, cleaned throttle body. New mass air flow sensor. New ignition control module, and coils. New crank and cam sensors. Any ideas? I’m lost

[video]https://www.youtube.com/watch?v=T_H7eohRoHA[/video]