Under the Hood: DodgeSRT-4
Things get stranger. The turbine discharge is also part of the manifold/turbine housing casting, and it loops back around and hits the manifold again on its way to the catalytic converter. Where they meet, there's a wastegate valve. Keeping the wastegate valve away from the turbine housing improves flow where it matters most. Problem is, flow where it matters secondmost, in the discharge pipe, looks like it will be fairly upset about all this wastegate flow jumping into the party. One of these days, we may try an external wastegate that flows back into the exhaust further downstream. Such a modification would require some fairly substantial fabrication on the manifold.
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