Quote:
Originally Posted by spacemanspif
Good start with the roof rack delete. Grill block is good but it’s usually best to block the upper grill. The idea is to take air in at the lowest point so that it can exit under the car and create as little engine bay turbulence as possible.
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Also, generally you're going to have higher pressure further down, which will improve cooling efficiency with a partially blocked front end (so you can cover more of an upper grill opening relative to the total [stock] open area than you can cover of a lower grill opening and maintain the same cooling capacity).