[BeamerandBimmer]

Originally Posted by AGS

Yes, the F90 M5 is burdened with the charcoal filters in the air boxes to make it 50 state compliant (thanks California!). They are pretty easy to remove.

Step 1 (Red) - Remove these plastic covers. They pop off with a light pull strait upwards.

Step 2 (Orange) - With two flat blade screw drivers on either side of the center pin, gently lift the pin up then remove the plastic pop rivets.

Step 3 (Yellow) - Loosen the two hose clamps on either side of the air hose and remove air hose.

Step 4 (Green) - Remove the two bolts for the metal brace.

Step 5 (Blue) - Loosen the 6 bolts that secure the air box cover. BMW finally got smart and designed these bolts so they don't come out all the way, they have a retainer on the inside to keep them attached to the air box lid so you can't drop them down into the engine bay.

Step 6 (Purple) - Drivers side only, loosen the bolt that holds the rubber shield in place.

Step 7 - Lift air box cover and use a flat blade screw driver to pop the charcoal filters out of the air box cover.

Step 8 - Reinstall the air box cover making sure it's on straight and makes a tight seal all the way around. Reverse steps 7 through 1 to reinstall everything.

Just did this. Thanks for the write up. Just to make it even easier for the next person......The blue and purple screws require a T-25 and the green circle bolts require 18mm and 16mm sockets.

Does anyone know what the purpose of the gray felt on the OE filters is for?