Air Duct, Removing And Installing, A5, RS4 And RS5: Removing

-- Remove the wheel spoiler. Refer to FRONT WHEEL SPOILER, REMOVING AND INSTALLING .

-- Loosen the front wheel housing liner in the front and push it to the side. Refer to FRONT WHEEL HOUSING LINER, REMOVING AND INSTALLING .

A5/RS5: 

Courtesy of AUDI OF AMERICA, LLC

-- Remove the expanding rivet -2-.

-- Remove The Parallel Parking Assist Front Sensor. Refer to FRONT SENSOR, REMOVING AND INSTALLING .

-- Remove the bumper cover side piece -1- on the fender slightly -arrow-.

Continuation: 

Courtesy of AUDI OF AMERICA, LLC

-- A5:  remove the bolts -2 and 3-.

-- Remove the expanding rivet -1-.

-- Remove the air duct -4-.

--RS4 & RS5:  remove the bolts -1 and 3-.

Courtesy of AUDI OF AMERICA, LLC

-- Pivot the air duct -2- slightly to the inside -arrow- and remove toward the rear.