Quote:
Originally Posted by Reaper
Why?
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The area of the windshield wiper cowl is a high pressure zone. Allowing air to enter through that area allows pressure to build up behind the radiator, which in turn means the radiator won't be as efficient (the radiator works off of pressure differential between the front and back of the radiator). This is assuming that the pressure at the cowl is greater than the pressure under the hood. If the pressure under the hood is greater than the pressure at the cowl (which in most cases it isn't), then yes removing the cowl will help.