It won't. By making the airway smaller and airflow bigger, the pressure of airflow will be fast to be out. ( correct me if i'm wrong. My physics kinda karat alreardy )

in lame words " smaller hole + bigger airflow = high pressure of air trying to flow out. fast ( if the fan spinning rate is high )

Some can be. But most of it after 6 months constantly using ( which are good ones ), the dust collected in the fan reduce the spinning rate or even jam up. But this 1 use adapter which is quite good. But the sense of temp had to use the USB cable for the sensor.

Might get it but dunno how much it cost

OT : I got an intercooler but I took out the fan and try to wire it to adapter it works. But can anyone suggest me where can i get a 12v adapter? I'm using n3310 adapter just to test whether it will work or not ( dunno why I still kept it )