I think what you are looking at is the cover for the cat, parts #3 & #4 in this diagram
You will smell fuel on cold start up as the FN2 chucks a lot through in the warm up cycle, one reason why it is only EU4 compliant.
You will smell fuel on cold start up as the FN2 chucks a lot through in the warm up cycle, one reason why it is only EU4 compliant.