Originally Posted by e90pilot
That round filter is not the same as the BMW performance filter. It uses the stocknair filter or a K&N replacement (stock shape). Half of the stock US airbox is reused. This is what it looks like with no lid.
This is the new intake connector. It has wider opening to the airbox. That's why the lid is new.
Is the carbon fiber on the OE BMW Performance snorkel simply a cover over a plastic snorkel or is the whole snorkel made of carbon fiber?