I am installing a wideband and wasn't sure if I should add another hole for the stock 02 sensor. I thought I remember reading with the Power FC you can disconnect the stock 02 with no ill effects.... maybe I am completely wrong. I tried to search but I didnt find anything specific.

Thanks,
Chris

 

No need for stock O2, just make sure to disable the O2 feedback.

Also, depending on which wideband you have, you can connect an output from the wideband and make it read like a stock sensor ( narrow band).