Sorry for reviving an old thread - I thought I'll just add my experience.
So I have a 2016 Golf GTi Clubsport with 75000km / 46600miles with upgraded IS38 turbo and all the goodies. Making around 420-430whp & 550nm-570nm depending on the dyno.
But before I installed the upgraded hybrid IS38 turbo - I purchased a VWR Catch Can from a local distributor (
www.vagcafe.com) - kit is great quality - no smoke, no oil leakage...I believe I purchased the revised revision of the kit (I'm quite lucky because I didn't actually know there were revisions).
But since installing the VWR Catch Can - the cold mornings startup has been poor / rough. It doesn't always "blip / rev up" like it used to. Once the vehicle has been running for plus / minus 5-10min...it will "blip / rev up" every single time without hesitation when switching the car on and off. Anyway...installed the OEM PCV back - no startup problems whatsoever. It "blips" every time with cold startup. So initially I thought something was wrong with my car but I have numerous friends with Golf 7R's that also has the exact same problem after installing the VWR Catch Can System.
So my question is - what causes this? And does anyone else experience similar cold startup issues after installing the VWR CC system? Some pictures of my ride / build can be found here
https://www.instagram.com/rommiesgp/