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      12-13-2016, 12:49 PM   #3
MadeInPhilly
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Drives: E30 318is, E90 335i, 03 GTI
Join Date: Sep 2009
Location: Dallas, TX

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you can threw codes for the o2 sensor or if the car is running rich.

I did bank 2 few weeks ago. Here are a couple comments

1) You do not need to drop the PS rack. You can unbolt just the passenger side and loosen driver side enough to just slide it out a bit.
2) Use a stubby ratchet with the o2 sensor socket. A stubby 22mm socket will work too. It will break loose.
3) Be careful when you go to route the wiring around the valve cover. I broke one of the clips that holds the o2 sensor wires down. They are fragile.
4) It has been mentioned on the forums. You can use the bank 1 sensor p/n for bank 2 but you will end up with extra harness length that needs to be zip tied up.
Appreciate 0