What is this piece?

Sep 6, 2018
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Vacaville California
#1
I noticed this small pipe, right under the CAI filter was leaking, I’m not exactly sure what it is but it’s probably not good. Also, the exhaust smokes rarely on a warm day after 20-30 mins of driving, and it only smokes when on acceleration, any idea?
 

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wmburns

SN Certified Technician
Aug 14, 2009
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Houston Texas
#2
It appears to me that you are pointing at one of the AC lines.

Note, If you are hearing a hissing sound this is normal sound of Liquid Freon boiling off.
 
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