They worked for me
MPE + VRSF catted dp + exhaust flap mod
https://g20.bimmerpost.com/forums/sh....php?t=1705027
My cel has come back on 2 or 3 times in the last 8 or so months but has always gone off within a day or so.
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Sold: 2020 M340i, BM3, VRSF catted dp, MPE, Dinan springs