Most your CAI sit in the stock location such as Airaid, K&N. The system your friend had must have been below or not protected form water. Click Here for a view of a CAI protected. As you can see were it sits and how it is shielded also sealed up against the hood. Did his car get submerged in water?what are the odds of a cold air sucking water into the engine? a freind had a cold air and this happened and killed a cylinder and had to pay thousands for repairs.