That will not work any better, you'll be trying to suck air out of what is essentially a poorly sealed vacuum. Try it yourself, take a plastic straw and block one end with your finger, blow into the straw. Then try to suck air through the straw. You'll notice in both situations, it is impossible to...

Hello For the Raspberry Pi 4, I'm going to do the same thing as on my old Raspberry Pi 3 B +. I will take the official case and add a fan Noctua NF-A5x10 (3,3V) on top. The only difference is that I can not blow in the case because there are no removable sides so I will reverse the fan and extract t...