I think Larry or Kieth two of the mods on this site have a painted intercooler. Both have RR RS so I'm not sure which one has a black intercooler. I doubt any type of paint is going to reduce the cooling efficiency of the stocker or any other.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.