Your throttle body has coolant running through it. this is to prevent the throttle plate (see the first pic) from freezing or getting stuck in colder climates.

if you bypass the coolant running through the TB, you'll have less heat running through the TB and the air will theoretically be cooler. combine this with the intake manifold gaskets from p2r or hondata (or both) and you're basically slowing the spread of high temps making the air traveling through your engine hotter, and it'll help your performance.