Pulled the trigger on the Whipple intercooler. Does the black flat backing behind the grill get tossed or is it left in place? Has anyone sprayed black paint (light coat) on the front of the intercooler to help hide the exposed silver of the intercooler which shows through the grill opening? I realize there would be some reduction in heat transfer due to any extra coatings being applied to the unpainted intercooler.
I used a BBQ/Wood stove flat black paint on the intercooler on my mustang's turbo kit. These paints are made to radiate heat rather than retain it like some engine paints or exhaust paints. Avoid paints with ceramics that are designed to retain heat (ie Header paint or coatings).
IAT's rarely get above 126 degrees on a 1/4 mile dragstrip run or any datalogs, even with ambient temps in the mid 90's. Typically, they stay in the 100-116 degree range. The car is pushing 17 lbs of boost.
There was a youtube video by mighty car mods claiming painting it black helped and another by engineering explained that refuted it but the differences seem to be negligible overall.