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it is actually useful

mine doesnt have one. but it makes sure that air doesnt go underneath the radiator etc, and that it DOES go through it like its supposed to.

when changing aero / adding parts etc the air simply doesnt go straight through the rad, rather it goes everywhere or completely misses (goes underneath or around) the rad in some cases.

best bet drill some holes in it, and cable tie it up again - you dont notice it and cant see how raggy it is, but more likely than not it is keeping your car a little cooler.

Yea i could see how it helps directing air through the radiator.

Mine basically fell off and i have never put it back on, i should but my theory is that more air can get to the sump now maybe cooling the oil a little more, dunno really just a theory of mine.

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