I've never been clear on this. I know the EAA flows better than an OEM paper filter and filters better than a K&N style filter. But does the EAA offer superior filtration over an OEM filter? Even though they don't make one for my TL, I can buy a cone one to put on the intake pipe, before it gets to the airbox. I wouldn't mind going with something way oversized for my car so that there's no additional restriction and use it as a pre-filter and hopefully even better filtration than OEM. Yes, I'm getting bored with the car again.