The aftermarket CAI tubes are larger than the stock piece so they flow more CFM. They are also more of a direct shot. Since my rig had a clutch fan, the stock tube was a POS since it was flat, smashed and crammed to get to fit. The bladder that hangs down off the bottom is what is the holts bladder for throttle response and such. I think the Outlaw CAIs used to have them, but I cant find one anymore.
What did yours look like stock?