What is upgraded as far as certain “stages” of turbochargers?
So I keep hearing about stage 2,3 or 4 but what is different about these stages? Thanks in advance.
It’s not the turbocharger that makes the stage.
What’s in a specific stage vary depending on the car’s performance part manufacturer.
Look at this for an example: http://www.cobbtuning.com/products/?id=2225
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