[stealthify]

How do I know if my turbos are bad?:
Turbo death is definitely something many of us dread. Nobody enjoys having to deal with this. Some of the main signs of turbo death include heavy smoking at idle (or while decelerating) and an excessive amount of oil inside the Y-Pipe (a thin layer is generally okay). You can also take off the turbo intake pipes, and attempt to wiggle the turbine shaft. If the shaft has significant play in it, your turbos could be shot or on their way out the door. You can also spin the turbo’s wheel to make sure it spins freely.

If all of the above checks out, yet you still suspect that something is up with your boost, you may want to check around to see if you have a boost leek.