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I think people on this forum put too much stock in grill blocks. They think that because the air going through the radiator and engine bay is turbulent, having the airflow slam into even a vertical surface is somehow better. I think if anyone here had a jet engine, they'd try to block the intake "because flow through a jet engine is turbulent".
A grill block may improve aerodynamics on some vehicles, but on a Wrangler, airflow is gonna hit that grill block, and fan out.
To see what I'm talking about, hold a knife horizontally under a running tap. Now hold a fork under the running tap to simulate a grill.
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