I just bought an 02 S80 T6 a week ago and today observed that the cold air intake duct that comes from just above the radiator to the bottom of the air filter housing is missing. I read something on another forum which indicated that it is of little to no value to have one on the turbo models. I can get a replacement for about $50 including shipping. The car seems to run fine even on a hot Texas day. Any advice on whether it is worthwhile to replace it?