vw golf mk3 1993 1.8L accelerate poor when gear is engaged issues

I have electric problems with my 1993 vw make 3, 1.8L electric carburetor, It starts up fine but on the exhaust cat back is filled with black smoke it won't communicate with VCD diagnostics am sure is burning unusual fuel, the reading from the 02 sensor is 0.51v,

The car fires and vibrants with huge black smoke like it's misfiring when raised to 6000 rms without gear engaged.

When the car engaged into gear it moves slogish like it holds back the torque release it and jeck it doesn't really move smart but slogish, I press down the throttle but it doesn't seem to deliver the quantity of fuel that is supposed to be vented into the inlet manifold to allow the car moves smarter and better.

I have a feeling it's a bad carb but I want to understand the components in that Bosch electric carb that is bad because they are 3 major components that makes up the electric carb the single point injector at the top, the electric choke by the left and the black Fibre on the right.

I need more knowledge for better understanding and operation of electric carburetor along side with how it's been controlled and giving signals from ecu.