Shine on by upgrading your Firefly Intercooler Kit. The air rushing into the engine is hot, but with an Intercooler Kit, it will be colder. Firefly Intercooler Kit are fun upgrades. Colder air is denser than hot air and an Intercooler Kit helps turbo and supercharged vehicles to produce more horsepower. Many Firefly Intercooler Kit are available. An Intercooler Kit makes a big impression on others. Show off your new Intercooler Kit at your next meet.