O2 Sensor Exhaust Bung In The Collector picture - Before I had the sidepipes ceramic coated, I welded in an exhaust bung on each side. The LM-1 O2 sensor screws in there. A plug is used to close the bung when running without the LM-1.
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image -- 1280 x 960)
Before I had the sidepipes ceramic coated, I welded in an exhaust bung on each side. The LM-1 O2 sensor screws in there. A plug is used to close the bung when running without the LM-1.