What is this thing (some sort of air tube on intake)

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11-03-04, 10:36 AM

beefhole

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What is this thing (some sort of air tube on intake)

What is this thing? This is on my NA S5, but my friend and I noticed it on his S4 (which is now supercharged). The blue and black whire thing is no longer plugged in on his car. What does it do?

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11-03-04, 11:27 AM

RotaryResurrection

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AWS valve, cold start to 3000rpm momentarily to heat up precats for emissions.

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11-03-04, 11:31 AM

beefhole

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OK. If I unplug that blue and black clip, will I disable the cold start and not harm anything else? I try not to let my AWS kick in by starting in gear.

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