The car has been sitting for 2 years or so.
Most of the obvious parts have been replaced: fuel pumps,fuel filter,distributor,spark plugs,spark plugs wires,O2 sensor,Fuel pump relay,rubber boot under the air plate,cracked vacuum hoses,new injectors(after market).The fuel pressure is in specs measured at the FD ports.
Upon starting it today it will not rev up when cold, it will bog down again but a little better response when gas is pressed.
I tried to drive it today and if I only feather the gas it will take off gradually but if I press it hard it want to stall and bogs down.When I drove into the driveway it just died and would not start again.Then waited 10-15 min tried to start and barely parked in the garage.
When measures Duty cycle shows 38-52% at 2500 rpm.The idle is very unstable all the time.

DO I need to get a real rebuilt FD or what is causing all that.