Yeah need to get Camshaft timing deviation tested A.S.A.P. !
Material in the filter looks like the VarioCam wear pads breaking apart.
Link to the parts: Pelican Parts - Product Information: 996-105-253-00-M100
Serious engine damage if they get much worse! 
Search forum for more info.
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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