Depending on your needs, the High Rise Hood can be made functional by opening the nostrils for a cool air induction or simply for a cool air supply to the engine compartment. The rear of the Hood can also be opened up for heat extraction or cowl induction. By manipulating the nose, hood and cowl openings, you will have the ability to control the amount of air into, over and out of your engine compartment. When used along with our G4 Hood Louvers, your C4 will experience the ultimate in cool air management.