Radiator Shrouds
 

Do they make a measurable difference in cooling system performance? The stock radiator guard looks like it partially blocks the radiator, maybe I'll just take it off. I'm not sure how useful it is at the Dunes anyway. I see some companies offering bolt on shrouds that are supposed to channel more air to the radiator. Who has any experience with these? Do they work or are they just a gimmick?