Lets get into some Specifics of Turbos

The guys at GCG explain what GT34R means. Each letter and number represents a certain attribute of the turbo. They also explain what kind of turbo is used on certain applications. Each turbo has its own horsepower rating and class. There are three classes small, medium and of course large. There are also, custom built turbos which may behave much more differently than regular built one.

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