THE MAF SENSOR IS REMOVED FROM THIS AIRBOX BUT IF IT WERE STILL IN IT IT WOULD BE INSIDE AREA WHERE YOU SEE THE MAF AIR SENSOR STICKER ON THE OUTSIDE OF THE BOX THE AIR BOX WILL COME APART AND THE MAF SENSOR CAN BE EXPOSED...AND THEN YOU REMOVE I THINK 4 BOLTS AND THE MAF SENSOR CAN BE REMOVED FROM INSIDE OF BOX...