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Sorry for going slightly off topic, but were you attempting to adjust the wastegate flapper to stop rattling?
MHD claim to help fix this with their tune but mine still has a slight rattle especially on cold starts.
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2015 435i - 401whp
Scorpion catless dp, VRSF 6.5" HD FMIC, MST V2 inlet, NGK 97506, MHD Stage 2+ 102, xHP Stage 3, M Performance Exhaust (modified for valved straight thru)
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