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Old 02-26-2012, 11:11 PM   #6 (permalink)
Got MPG?
Join Date: Sep 2010
Location: Southern Alberta, Canada
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The Car - '09 Toyota Corolla CE Enhanced
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I don't know if I would be comfortable blocking off the radiator with pieces of cardboard right up against it like that. If the fan did come on, it wouldn't be able to draw air through, then engine overheating could be an issue. No aero benefit either. You could always use some tape and mock up a 2/3 - 3/4 lower grill block and remove all the cardboard directly in front of the grill, this would allow the air to be drawn up from between the gaps between the bumper and the radiator...resulting in aero and faster warm up, much smaller chance of overheat with the upcoming warmer temps...and you would have a template for when the color of chloroplast comes along that your like

It would be good to find out how much block you can do safely, then work up to a movable type if you wanted to.

Wheel spats and mudflap removal is another area that helps.
2013 Honda Civic Si - 2.4L
OEM front to back belly pan from the factory.
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