I don't know if that actually benefits the performance of your car. If you think about it, the Intake
manifold will get its heat fromt he head which gets its heat from the combustion chambers. That heat wrap, if anything, will insulate the Intake
manifold once it gets warm and make it retain its heat rather than let it disipate out of the manifold. Wrapping it may benefit performance when the Intake
manifold is cold but once it heats up it may had adverse effects.
you can get it from summit racing for 25 bucks for 1" by 25 ft. (i think, i dont remember)
it keeps the heat away from the Intake
manifold and soaks up the heat(from tne manifold) and releases it as you drive.
all you do is wrap it over the manifold and use clamps on the ends. its not too hard. just takes time to wrap.