Well I'll give it a trip to gym again in morning..it's 12 miles there and then 12 back today issue happened just after fully completed journey day before I got 2 miles from gym and issues started so once it stops raining here I'll pull pipe and get it plugged and let pipe vent and I'll report back

So plug the hole. Let the pipe hang down and try replicate my circumstances to see if the issue is persistent. I'll also try get hold of new orignal filter for oil breather

Yeah I checked it, it had the upgrade mod on it I've replaced rhe rubber seal in tip of cap. I did have a crack in the lid of the rubber seal side but I glued it back for now. That's what I seem to also come back too tho it got be sucking hard some reason and sucking more oil into the the...

Did you ever find the resolve to this. I'm currently the same. Not all time but some reason doing 2k slightly pressing pedal you get a chuffing and juddering from engine and what best describe is grey smoke. Just as you describe above image changed pcv filter changed boost hoses inc one at back...