Carbon Fibre Spark Plug Cover - Engine Problems?

Has anyone heard of a carbon fibre spark plug cover causing problems with the engine?

Just heard this is in passing from a specialist but I can’t see it being a problem myself :question: .

I reckon its been fitted without using snake oil, which I do have available!!

Hi Dave,

snake oil? Is it going to be like ‘snakes on a plane’ in the engine bay?