You did disconnect the stock O2, didn't you?

 

Yes, replaced it with the new Bosch sensor and ran the wiring up through my shift boot to the gauge.

 

When using the LS-1 for the ecu, can you just add the LS-1 output wire to the2N red/blue wire and utilize the stock ground with no modification.....or....do you have to modify the 2C terminal (O2 Sensor) ground to a common ground as the gauge, LS-1 system ground and the LS-1 heater ground on the engine block?

 

If I run my LC-1 first output to the stock ECM for now, I assume I can simply adjust the voltage range back to WB, andjust the settings on MSpnp, and keep the same connections...right? Anything I can get working now, before the engine swap, will save me time later.
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