Misfireing 7m

[toosuped88]

i have an 88 that i just did the ge to a gte swap. i just got the car running and all timed up but the motor is misfireing at idle and it seems to be boosting strange, like the turbo spools up but the power isnt delivered. All of my intercooler piping is tight and i can not hear any vaccume leaks. Also there is a cloud of white smoke that comes out of my exhaust when i start it. i have been told there is possibly a vaccume leak or my car is running to rich. what is going on? Please help!