indy4x
Forum Supporter
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- 3,615
- Location
- Pontypool, South Wales. UK
There is a boss in the downpipe for the upstream O2 sensor so it is the correct way roundShould it go the other way around to put what looks like an O2 sensor socket at the bottom of the downpipe?
The outlet from the CAT is 57mm OD so wouldn't work anyway



