I noticed while working on my former car that there was another thing that looked like a capped off O2 bung on it on the other side of the O2 sensor spot. I was wondering if the older style RB turbobacks had them on the downpipes so a wideband unit could be put on there? There was definately something there though I couldn't really see it, so i'm wondering if it came stock with a removable bolt that could be taken off and another sensor could be put in, or if someone added it to mine.

- Brian

 

Most likely an EGT bung

- Matt

 

Not most likely...it is.
O2 sensors are 18mm x 1.5 - there is no way in hell an O2 sensor is going to fit in there!


-Ted

 

Well darn.