haha, you could grap a couple more hp just from running a higher octane in the same sense and theres a pump that has 100 right down the road!! I see what there doing, but its shady in the same sense you have to ship your airbox out to them
I'll do you one better- GOLD FOIL!!!!!! Cost is going up though.
Actually I'd really like to see temperature readings at both ends of the box on both 'modded' and un-modded.
I'm fairly certain that the airbox and stacks were made of the materials they are not only to keep the weight down, but to minimize the heat transfer.
That being said, the reflecting heat idea is not a bad one, but to really do it right, you'd be better off using something layered like an exhaust heat shield, polish it up and you have some decent reflective proerties too- and Blingin!!!
I did something similar myself, very easy and dirt cheap. After removing the large rubber shroud, I decided I wanted to keep the airbox as cool as possible, so I obtained a roll of aluminium reflective tape from my local hardware store, and proceeded to cover the underside of the airbox. No idea if it makes a measurable difference, but the concept is sound, and the shroud is there for a reason.