As you guys have seen under my hood I have a dirty Monsterflow intake with the foam filter it came with. Well, I was never comfy with foam, and all my other cars run K&N filters, and I have the cleaner kits.
So I bought a K&N cone to replace the foam element.
When foam element removed there was dirt inside the unit, on the plastic of the Air Sensor. Also the foam element sounded a hell of a lot louder roar when I got to above 4K RPM. Could not hear the exhaust at all.
K&N Cone is a lot quieter, no more roar
But I hope it filters better than the foam did.
This was a five minute ride impression, so I will have to see with an extended drive.