http://www.autospeed.com/cms/A_112608/article.html
For forced aspirated cars, intercooling is one of the most vital considerations. In fact, after ensuring that you get plenty of boost over as wide an engine load range as possible, and there’s the right fuel and (in petrol engines) ignition timing, intercooling is the key to making power. That applies whether you’re talking an Impreza WRX, Falcon XR6 Turbo – or a diesel passenger car.
But in other respects, diesels are different. Simply, the intercooling approach that works on a high performance petrol engine car does not necessarily work on a diesel turbo. Let’s take a look.
