Originally Posted by flip
One more question, does anyone know which side cylinder #1 is? From my searches I've read it should be closest to the radiator, passenger side. Is this correct?
You are correct. So if you are looking at the engine, number one cylinder is the one on your left as you are looking at it. So bank 1 is on your left. If you need to change the upstream O2 sensor on bank 1, it is the one on your left, before the cats. Hope that this makes sense. Let me know if you need help, I don not mind.
'09 E92 ///M3 Interlagos Blue,6MT
,Silver Novillo Leather,CF Trim,Premium Package,Technology Package,Cold Weather Package,Premium Sound,19"Wheels,Moonroof-Toy/'14 335i
,Premium Package,Technology Package,19" wheels,Heated Seats-Daily Driver/[b]'04 Yamaha R1-Toy/'06 Yamaha Raptor 350-Toy/'14 i3 MigaWorld 19"wheels-Daily