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Hey guys its emissions time. Trying to figure out a easier way.

I have customer exhaust with a high flow cat, obviously not on headers but by the center support bearing.

Issue is I only have one bung and only one o2 sensor.

Can I split and join the wires for both sensors(both sensor two, downstream, post cat) and it still function properly (no CEL)
 

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I have customer exhaust with a high flow cat, obviously not on headers but by the center support bearing.
The question might be can that cat even work being so far back there. They need to get really hot to operate at all.

You other option is to simulate the 2 secondary 02's.

I'd probably install another bung and extend the other 02 sensor harness. Maybe run them both through the existing 02 sensor hole.
 
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