hello, can any help me with what the big black round plug at the top of the turbo is for I see a harness connected to it, wonder what it does?
Now this time I have to disagree. It doesn't need a catch can but it can't hurt especially if you don't use the recommended oil. A little oil flowing by the valve never hurt an engine. Synthetic oil doesn't sludge or gum up the valves. (Look at a 2 stroke ) Personally I think a catch can on this engine is useless and I believe it it would have needed it GM would have put one there.Don't believe everything they say, check it out:
It's the A14NET/B14NET engine)))
And I suppose B14XFT(used on restyled Trax) also needs an oil vapor catch can.