Yeah currently I have the JLT passenger side filter. I am considering one of the oil fill cap breathers mostly for the aesthetic but also to relieve some of that pressure.
I have been running a single Spectre filter on passenger side for over 10k miles. Car just turned 11k. No oil anywhere. You have to pop the check valve out of the pcv valve cover insert. When I swapped my TB around 5k miles there was no oil in intake or tb. With the cover on you will not see it unless you look. fyi.
This is a good design, self draining, nice appearance, unobtrusive and looks factory. I wonder how many they would sell if it was priced near it's competitors. I have a JLT 3.0 and it's way over priced IMO. It works, materials are solid and while affordable it's a luxury trinket. Cheaper options that work just as well are readily available yet people still buy these. KPM must have discovered a niche market, someone has to be the Rolex of oil separators. And they are out of stock.... lol.
link to JP racing?Check out JP Racing's stage 2 breather kit. Running them on my n/a car. Got them wrapped in some breather socks I found on Summit Racing.