If the ILM manifold is anything like the racing beat with the sensor boss welded in the 4 way collector then the mazda primary sensor wire should reach. If i recall i had to turn a small cable retainer bracket on the engine upside down to give the cable more slack.
You need the primary to run closed loop so i don’t see how or why you would want to map it out.
Okay thank you. I just wasn’t sure which O2 where needed but primary stays. Thanks