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I made 485 WHP (or around there, with the clutch slipping, never got a final number since i wore it down past the rivets) @ 16-17PSI 11:1 CR with a recirculated wastegate. I haven't had any open gates make more power than my personal setup. Eventually it can give a slight reduction but on a 3" exhaust its not an issue for most peoples power levels. I am building an even bigger block that is bored out and I have no desire to change my setup.
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