95 cobra intake help

[SteveAZ]

I just got done installing a cobra intake on my mustang. Everything went well no major problems until I was done.

No the car heats up fast and goes all the way to the (a) on normal. Prior to the install it rode between the (O , and the R)

I double checked the thermostat its good (Installed Right).

last week I installed Fluidyne Radiator, new hoses, Thermostat, and temp Sender.
The upper hose gets hot so I would assume fluid is flowing. I did notice the upper hose gets really hard like theres alot of pressure. Is this Normal?

Any suggestion on what to look at to correct this would be great.

Thanks