Intercooler black paint experiment

[asshanson]

Stock intercooler on the Exige was black (not sure if painted or anodized), my aftermarket one was black anodized. Both mounted upright on top of the motor. I have a rear mounted bare aluminum intercooler now, with sub-par airflow at less than highway speeds due to a steep angle off the rear deck, air likes to just pass over top instead of going through.

Mo, why not anodize it? Seems to me like that would be better than paint. Cost is a bit higher though.

Can't watch the video here at work, can anyone give cliff notes? Based on comments it seems like the black performed better with little airflow, but about the same with a fan across it?