Is hood insulation necessary?

Ima thinking three things;
1) that air-cleaner stud is wanting to identify where the hole in the hood should go, and
2) that will make it easy to put the hole there, lol. and
3) seriously.

Your engine hates hot inlet air.And it is impossible to correctly tune it, if the inlet air temp is constantly changing.
Consider this; at idle and parked, with the hood closed; your underhood air temp can skyrocket ; say 300 to 400 degrees. The headers alone will run !400 or hotter.
Then you put it into gear, and the rpm drops another 100/150, so the waterpump slows down..... Now your fan kick in, and it is desperate to pump that hot air all over your engine.
Then you accelerate, creating more heat, which the fan dutifully tries to push under the car, with moderate success. Finally you get it up to 30/35 in top gear.....and the waterpump slows down again, but ram-air is now controlling your rad temp, and to some degree,your underhood temp. Cruising, it might be down to 250/300 now.
Then you might kick it down into second and accelerate to 65 mph, and go for a cruise. Now ram-air is limiting your water temp to say 180, and your underhood is also down to say 200. But say you stomp on it to 100mph, screaming thru the gears.
Only about 1/3 of the energy in the fuel makes it to the crank. The other 2/3rds is split more or less equally between the exhaust and the cooling system. So your engine is creating massive amounts of heat on it's way to 100mph. Of course water-pump speed is up there, and ram-air is doing a great job of keeping the water cool. But where is the heat going? Ok sure, most of it is blasting underneath your car. But your engine is trying desperately to "suck" 500 to 700 cfm of that really really hot air, straight thru the airhorn;like a run-away nuclear-reactor, heat begetting heat.
jus saying lol.