black smoke coming out of tailpipe resulting from not all fuel not burning

Tweet

i have replace coil upgraded to msd ignition coil, plug wire , plugs, and repprogrammed ecu with a ecu upgrade kit.this is a conforti shark injector kit.the black smoke or black smoke still did not stop what else do ineed to do to try to fix this problem.i read you lose power if all fuel is not consumed therefore how do i make my engine run more effectively, and burn all the gas