wd
in my setup I dont need anything on the vc as the crank case gets manifold vac, after a few weeks with a can installed on the vc it had 0 in it, the line even now after 5k ish is clear and has no yellowing,the pcv side with can on the other hand is full of shiz
3 waste gate arm gets boost only ,use a nipple on the compressor housing or shortly after the compressor outlet
2 depends on you! a lot of debate here.. I have mine pcv box---catch can---check valve---manifold / vc---pre turbo/
1 no more than 2 items per vac source please:P I tie my gauge into brake booster I saw little change in gauge reading with it on either. fpr/bov booster/gauge
Tell us how its setup, looks like pcv---can---vc---T---pre turbo? Not THE BEST but works.