2013 Scirocco R (2.0L, Gasoline, A/T, 65,000 km).
The last couple of weeks I noticed what seems to be a turbo related issue as sometimes it seems to drive inconsistent (power band). No check engine light, no strange sounds,
but slight pulling and/or loss of power even when driving very gently (2000 - 2500 rpm). It's hard to explain it but it's very subtle. Sometimes it feels like I'm not getting enough power
at the lower rpms and sometimes it feels fine. The turbo gauge (defi) needle to me seems like it's a little high in the boost range for the low rpm I'm driving. I don't remember it going up that
high (1.0 bar) just driving at 2000 - 2500 rpms (when gently accelerating from stop at a traffic light).
The other thing I noticed is it seems worse when I turn the AC on. When I had the AC on and was stopped at a redlight, I saw the needle moving (not fluttering) between -0.2 to -0.4 vaccuum. It was really swaying back and forth up and down up and down between those two numbers even though I was doing nothing but just foot on the brake waiting at traffic light.
I decided to turn the AC off and the needle went back down to -0.6 and was steady, not moving anymore. I don't remember the needle ever doing that before so I think something is wrong in combination with the fact that it feels a little off when driving.
Any ideas/suggestions what it could be?
Also, I don't know if it's related but I took a look under the hood and noticed what seems to be a bit of oily/dark/wetness around two areas (which I don't know the names for) but I will attach the photos here: