1.
You have the intake installed correctly, but not the hoses and breather.
2.
The two small hose goes back into the "sensor" (at 50sec in your vid) the same way before the install.
Do not tamper with the "sensor" or hoses, just zip-tie or mount to stay in place when you're done.
That "sensor" is the vacuum switching solenoid for the EVAP system, which is now DISCONNECTED, please correct it to fix your check engine light, and possible bad mpg and idling.
3.
Now you have the hose from the valve cover to the intake installed correctly.
There is one more hose *(similar to size as the one to the valve cover from the intake)
that comes from the same area as one of the small hose *(lower area of the brake fluid reservoir)
***@2.25 of your vid, the outlet that sticks straight up goes into the intake.
***the other outlet that is horizontal goes into the solenoid @50sec.
**Look at my attached photos for reference.
4.
Now if I remember correctly, the design is flawed and does not accommodate the air temp sensor well.
Plus you didn't mention the air temp sensor in your vid, I'm guessing it was left out and not properly installed.
I can't remember how I did it, but I think I used the biggest hose that was included with the intake, stuck one end into
the large intake outlet (circled in red), then stuck the air temp sensor into the other end.
Cut the hose to the shortest length, but make sure that it will still hold the air temp sensor in firm place.
Try and see if this works...I'm not 100% on it since I can't remember it clearly.
5.
The Weapon R Intakes are confusing to install...
BIG HINT:: WHICH EVER HOSE CONNECTED WITH THE STOCK INTAKE GOES ONTO THE NEW ONE. Nothing changes.
The small hoses to the solenoid DOES NOT CONNECT TO THE INTAKE NOR ARE THEY LEFT OPEN ENDED
Here's my photos for reference,hoses/sensors(solenoid) connections are the same, just different intakes.