balaguru

iTrader: (2)

I am planning on installing the BP kit with a single cat within the downpipe. I'd like to retain the rear O2 sensor for emissions, drivability and efficiency. Is there any reason I can't just have a single sensor connected in a Y fashion to the OEM connectors going to the ECU?

Cux350z

iTrader: (162)

just connect the signal wire.

balaguru

iTrader: (2)

I don't understand. I am asking if I can feed the same signal wire to the 2 separate inputs that the ecu expects to see. If so what would I do with the heater wires: just wire to one?

Cux350z

iTrader: (162)

on second thought, just put another bung in there if there isnt one. Install both sensors.

If the ecu monitors the heater circuit youll need both or an o2 simulator. I have other devices that I split just the signal wire but they do not have heater circuits in them.

balaguru

iTrader: (2)

That might be the better option. Sasha is modifying the downpipe for me anyway.

Bret86944

iTrader: (4)

I would also recommend the second bung. I'm pretty sure it's a heated O2 sensor so I don't know what impact splitting the wire would have...