I use a typical crow foot 22mm socket but I put the socket extension in "from the wrong side" and turn righty-loosey.

I used two part 90° defouler but can't seem to find them anymore for sale.

Remove the harmonic isolator that's in the way when working on post cat O₂.

I will pre-twist the cable backwards so I can turn in the sensor ending up no twists.

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)