"One feature that's trickled down from the modern GM V6 (high feature V6) family into the SGE family is the integrated exhaust manifold. Put another way, there is NO separate exhaust manifold on the LE2, just one exhaust "port" in the cylinder head. This allows extremely close coupling of either a turbocharger, or a catalytic converter to the cylinder head for optimum performance and lower emissions."
So it's basically one giant exhaust port for the whole cylinder bank?
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