File this one under budget mods. You don't have to spend big bucks to make power and improve performance. Factory and aftermarket intakes made of black composites (plastic) soak up heat. That heat reduces the density of the air and limits the power your engine can make. The aftermarket intakes are better at reducing turbulence, but the plastics can still soak up heat. Polished aluminum intakes actually soak up more heat than stock composites because aluminum is a better conductor of heat. Using Heat Shield for air intake, you can turn your aftermarket, stock or home-made air intake into a true cold air intake. By creating a heat shield, we keep the radiant heat away, which will lower air intake temperatures, improve performance and hopefully even improve fuel economy.
To see just how much difference using heat shield