Assuming the smoke is coming from the exhaust, there are two things that will be the most likely cause.
1. Your line coming out of the turbo is not steep enough or has a part that is horizontal causing the oil to slow down when exiting the turbi
2. The ratio between the size of the inlet line and the outlet line from the turbo is wrong. I suggest that you call the turbo company and ask them for specific line sizes. They will say the inlet should be no bigger than X and the exit should be no smaller than X.
Either onw of these will cause a backup of oil in the turbo and it will start weeping through the seals.