i heard it was pointless....but when i originally bought the car it had a sad lookin short CAI and i drove it for a good bit that way till i got use to the power output, then i switched it out and put on a CLEAN easy breathing on (they were both cone shape) it the diff in the top in was brand new so i dont know if its true or am just trippin cause i was lookin for the change in it but hey am no expert