Originally Posted by garcmol
I don't know crap about turbos or superchargers. With that said, what is the purpose of the GMPP airbox under the hood? It doesn't look like it's even hooked up. Does turbo use air from outside or what? Hate to ask dumb questions, but I don't understand.
Turbos use the exhaust to turn a turbine to compress fresh outside air and force back into the intake manifold.