Does anyone here know of a source of aftermarket O2 sensors to fit the tester socket in the standard (F4) link pipe? The thread appears to be 10mm.
Guess you have 3 choices:
1- Make an adapter to fit a standard sensor
2- Cut off the 10mm one, drill and weld in a proper o2 bung
3- Drill header pipe 1 or 1&2 and weld in proper o2 bungs