Wow, that is a high opening temperature. My Corolla opens between 176-183F.
I see it like this, the aero mods still have to allow effortless cooling to the engine, if the fan is coming on while at speed I have too much blocked. The power needed to run the fan starts to cancel any gains the aero might have achieved....and I totally agree that if you run too close to the maximum allowable temperature you are flirting with disaster, there is no room for error or odd random temperature spikes. Not worth the mpg unless you don't care about your engine.
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2013 Honda Civic Si - 2.4L
OEM front to back belly pan from the factory.
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