Oil Leak Post PCV Valve Replacement

[JGAIRE05]

Hi Guys Looking for some help regarding oil leak spray on my 2010 Audi A5 1.8TFSI Engine Type CABD post PCV Valve replacement.The car was originally giving error codes P227900 Intake air system leak and P017100 Fuel Trim System too lean which looking at other forums can be due to PCV valve issues. On replacement I noticed some oil in PCV but as soon as I replaced car was noticeably smoother not hunting at all. On first drive the car had spray of oil near air filter box and line leading to it. When I removed line I noticed some oil in this and suspect it may be coming from this location . The question I have is why replacing PCV valve would cause this and is there any other oil leak points this may have generated. Ive attached Pictures. Any help would be much appreciated.

 

Regards,

Jackie