intake manifold heat sheild. does it work?

heat shield under the base of the intake. they claimed 12 hp with this. now i know its not really a "gain" but does this really help in keeping things cooler? intake is still in contact with the heads. if it does work a tb bypass would compliment this. any ideas on this?
exactly my thought. those are cool to touch and they still have a gap underneath. i just thought id ask. thanks


