A little dissapointed to find the OE filter on my 2016 car is also an oil soaked, pleated cotton material re-usable type like the K & N one just purchased. Being slightly larger in diameter though, the original fits perfectly around the four mounting supports without modification.
I wonder therefore if the improved breathing muted in the various stage 1 options, is achieved by dispensing with the snug fitting cover which only has a significant opening at the bottom.
