What???? Not enough air? That is wierd. The cone filter is an open-air element. The airbox, is closed, and has a smaller airhorn that funnels into the box. Think about it like this as well.
The car is not completely sealed from air coming into the engine bay. Therefore, it is possible that while moving, you could get air flowing from under and around the radiator, grill, tranny, etc.... So closed airbox, sealed to air coming from other areas except the airhorn in the side of the fender.....open element picks up from everywhere that air is and yes, even hot air from exhaust. So sometimes a heatshield is in order.
CTA intake, good idea....but guess what!!!!!???!!!
Open air element on the end.
Don't give up on the cone filter. I don't know who made yours though...I have an APC on my car and I have noticed an improvement with that filter than with the airbox....
CAWong, chime in anywhere here.
Sorry this is sooooo long but hope it helps
Rich