DRAG III DOWNPIPE Question
That hole is used when and internal wastegate is attached. If you're using an external wastegate you don't have to worry about it. The flange that bolts up to it for the dp will block it off.
I am using an external Tial WG but my DP dosent block it off, it leaves it open. Should I block it off? Reason I ask because I seem to have an exhaust leak, I think this may be causing it.
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