Agreed with previous post – the large volume of the airbox is good. Putting a K&N in front of it bypasses that positive.
Not sure this is a good move. You can put a square filter that has the same area in the OEM location AND that flows more than the OEM filter, so I’m not sure of the benefit. Although, there may be one for racing purposes.
For reference, see the Pirate setup – they have a long intake tract prior to the filter.
Also, Pirate has a sensor on the tract – I’m not sure if you bypassed the OEM location of this sensor with your setup.