O2 Sensor Necessary for Brock's Exhaust and PC?

[krex]

Looks like an extension will be necessary to hook up the O2 sensor but I'm not sure if it needs it with PC5. Should I screw the sensor in now and get an extension or bother at all? Will leaving it disconnected cause a check engine light? Any help appreciated. I was told this is the newest generation of Brock's exhaust for the Gen II. Looks nice. Mig welded but they are nice mig welds.

[Johnnnycheese]

.?
Only need for o2 is data logging to tune with.

[Rossco]

PC5 comes with O2 eliminator plug to prevent codes.

[krex]

Thanks, yall.