[Kracka]

Best of all worlds: black thermal dispersant coating

I had it on my Evo IX intake manifold and it looked good, plus seemed durable enough for an intercooler not in the direct fire of rocks and road debris.

If was effective enough to allow your hand to be held directly on the intake manifold plenum right after an autocross run; this was not possible before the coating. Not at all a scientific testing method, but it was enough real-world proof to be considered effective in my opinion.