ZPOST - View Single Post - Z4M post-cat O2 sensors: wide or narrow band?

pokeybritches · 09-25-2020, 01:38 PM

Narrowbands have 4 or less wires.

https://www.bimmerworld.com/Exhaust/...1-406-621.html

Widebands have 5 or more wires.

https://www.bimmerworld.com/Exhaust/...787540167.html

Pre-cat are wideband, post-cat are narrowband.

09-25-2020, 01:38 PM	#2
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	Narrowbands have 4 or less wires. https://www.bimmerworld.com/Exhaust/...1-406-621.html Widebands have 5 or more wires. https://www.bimmerworld.com/Exhaust/...787540167.html Pre-cat are wideband, post-cat are narrowband. __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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