Jeff poses a valid question.

This air intake does not supply the engine fuel system. It is one of two approximately 1" diameter intake tubes that supply (or vent) air to the enclosure housing the engine and transmission management computers (ECU / TCU). There is an additional duct at the rear that appears to go the cabin air circulation blower. My assessment is that the cabin blower is used to pull outside air aver the ECU for cooling.

The engine air intake is located high, behind the grille. One of the ECU-box intakes is located on the radiator fan shroud. The second passes along and around the washer fluid reservoir, then within 3/4" of the serpentine accessory drive belt. A cross member keeps it from moving rearward if it stikes a curb. Instead, it will be displaced upward, into the belt. Since it transitions from a 1.5" x 0.5" rigid duct to a 1" diameter hose before entering the ECU housing, I just replaced the whole thing with a 1" rubber hose (old water hose from a Nissan pickup at a junk yard). I also moved the entry point to a location well away from the belt (which required cutting a new hole in the thin plastic underbelly cover).

Were it not for messages posted on this and other S80 boards, I would not have had the foresight to correct this serious design deficiency before disaster struck. My old S70 had many scrapes on the bottom of the front bumper cover from parking curbs. It would have been just a matter of time before we destroyed our engine at 2 less than 2 miles per hour. The folks that low-speed crash-test cars and calculate repair costs would be appalled by this horrid design.