This isn't apples to apples but when I had a turbo'd spec v sentra, I had open and recirculated wastegates throughout my journey. Started first with recirculated. The turbo sound was pretty crisp at full boost. You could hear the turbo and exhaust pretty well. Each were defined fairly well. I eventually swapped to an open dump due to a design flaw that caused my manifold to wastegate gasket to blow. No flex coupler and the pipes would heat and expand at different times bla bla bla. The open dump was loud. It was fun to hit boost next to someone with an open window lol. The only thing is it sounded kind of dirty. I'm not sure how to explain that but that's the best description lol.
Personally I would (and am) going with recirculated. Sounds good.
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2009 370z touring w/sports package
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