Can you have a look and advice
 

Hi guys :)
I have the K&N 69 Series Typhoon Kits. And I found out that there are one line which is almost bind, and I have a pic for that. Can you tell me if the line can effect the car idle to fluctuate.this is the link.
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And one more thing. Today I noticed when the battery gauge drop from 14.2 - 13.1 i just happened that I used the wiper to clean the window. the gauge went back to 14.2 and dropped back again. So what is the link between them .

Thanks Guys and I really appreciate your help here :)