From the reading I've done, the most effective place to locate a hood vent is right behind the radiator, like the location of the forward hood vent in the DSM hood photo that Brian posted above. The vent opens into the low pressure area in the center of the hood and allows the hot air that has just passed through the radiator to exit the engine compartment. Hood vents elsewhere in the hood are usually not effective and often create more airflow problems than they fix. I'm glad to see you did some research before you cut random holes in your hood. <img src="/forums/images/graemlins/smile.gif" alt="" />