post #11 shows the wastegate that iaknown "opened up". See exhaust thread for why. Save your diffuser that goes between the DPF and midpipe flanges. One forum member put this back to show benefit of some back pressure in path to keep boost pressure from going too high. If you're for sure going to open exhaust, now is the time to think of addressing the wastegate or diffuser "put back". Go read that thread where the folks are addressing overboost.
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