What's the purpose of a intercooler? Well I know that the name contains "cooler" so it tells me that it most probably cools parts of the engine. My questions:
- how does it work?
- purpose
- what's the benefit of an aftermarket one?
- general installation info (replace with radiator or put it in front of it?)
- i know GReedy makes intercooler systems for preludes and WRX, any company make custom ones with special fit in 'tegs?

Thanks