^What derf said. This mod does not affect the function of the OE wastegates.
This mod is adding an additional wastegate in a non-traditional function (intake tract rather than exhaust).
This allows the throttle blade to stay fully open, and when the TIP spikes during a shift, the extra pressure bleeds out of the intake wastegate rather than being forced into the intake (or closing the throttle blade, as is done to control boost spikes without the mod).
In this application, the intake wastegate functions more or less, kinda-sorta like a BOV (but not quite, lol)
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