MK7 PCV Analysis - How it works, and why I've adapted the MK8 PCV (Pt 5)

This is a longer video, but should help dispel some myths around how the MK7 VW PCV system works. It will hopefully help understand why adding a catch can is actually what CAUSES itself to fill up, and really doesn't solve the root problems of the stock MK7 valve.

Check out the next video for a deeper dive now that more is understood:
   • MK8 PCV Retrofit UPDATES (Pt 10): Use...  

Be sure to check out the next video in the MK8 PCV retrofit process
   • MK7 PCV Analysis: MK8 PCV + Using the...  

For reference all testing was done on a "BK" revision PCV on my 2019 GTI.

Parts needed to retrofit the MK8 PCV:
+ 06K-103-210-D PCV Valve Hose (1)
+ 06Q-103-495-B Engine Crankcase Vent Valve (1)
+ 06M-906-094 Bung/sealing cap (1)
+ 3/8in vacuum cap (1)

Note: I had a spare vacuum cap in my toolbox, but you can purchase a small vacuum cap assortment similar to this one on Amazon or at any local auto parts store:
https://www.amazon.com/102-Assorted-A...

0:00 Intro
0:48 Overview of content
2:01 Problem with the MK7 PCV
2:35 How the stock system works
4:35 Air oil separator MK7 vs MK8
6:47 PCV under low load MK7 vs MK8
7:38 PCV under boost/high load MK7 vs MK8
9:16 PCV testing procedures/tools used
9:35 MK7 vs MK8 PCV in throttle transitions
13:06 Effects of an inline catch can with stock PCV
18:45 "Full" PCV plate replacement catch can systems
20:15 Test results from autocross with MK8 PCV valve
21:09 MK8 PCV retrofit parts required
23:23 Future testing with MK8 PCV hose technology
25:27 Variables to consider with the MK8 PCV
27:00 Conclusion/final words