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Originally Posted by nationtoxic
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I'm assuming you mean heat shield not heat sink...
What appears to happen is the MAF/IAT sensor gets heat soaked and it is slow to recover... HOWEVER without a heat shield like the stock air box or the airaid intake you will be sucking hot air from the engine bay... The stock air box actually does a good job of getting better air from the front of the car rather than sucking in the hotter air further back in the engine bay....