I infrequently set a code for the O2 sensor on my wagon. I'm going to replace both O2's and am also slowly upgrading the system for more power. At some point I'd like to replace the turbo, exhaust with 3" and get a reprogrammed ECM. If I'm going to replace the O2's would it make sense to go with the stock ones for now or upgrade to wideband sensors? I was reading that they give the ECM better info on modified engines. Anyone have a Bosch, NGK or ..... part number for ones that would work on the 2.3 turbo?

 

Wideband is different from O2s. You don't use a wideband instead of an O2 sensor. It's a completely separate bung and sensor and gauge.

 

+1

A wideband would be used with a wideband gauge, not the main o2 sensor.

 

The type of sensor used in conjunction with the existing O2 sensor is a narrowband gauge, but those are useless.